Home / 30,701.27-42,345.04-21,144.22

Finding the Fourth Proportional to 30,701.27, 42,345.04 and 21,144.22

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Solution

The fourth proportional to 30,701.27, 42,345.04 and 21,144.22 is: 29,163.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,701.27 : 42,345.04 = 21,144.22 : x
  2. Step 2: Convert to fraction form
    30,701.27/42,345.04 = 21,144.22/x
  3. Step 3: Cross multiply
    30,701.27x = 42,345.04 × 21,144.22
  4. Step 4: Simplify right side
    30,701.27x = 895,352,841.67
  5. Step 5: Solve for x
    x = 895,352,841.67/30,701.27
  6. Step 6: Final answer
    x = 29,163.38

Related Problems

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Half scale
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Double scale
Find fourth proportional to 30,702.27, 42,346.42 and 21,145.22
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.