Home / 30,633.63-42,269.45-19,147.19

Finding the Fourth Proportional to 30,633.63, 42,269.45 and 19,147.19

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Solution

The fourth proportional to 30,633.63, 42,269.45 and 19,147.19 is: 26,420.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,633.63 : 42,269.45 = 19,147.19 : x
  2. Step 2: Convert to fraction form
    30,633.63/42,269.45 = 19,147.19/x
  3. Step 3: Cross multiply
    30,633.63x = 42,269.45 × 19,147.19
  4. Step 4: Simplify right side
    30,633.63x = 809,340,988.94
  5. Step 5: Solve for x
    x = 809,340,988.94/30,633.63
  6. Step 6: Final answer
    x = 26,420.01

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Half scale
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Double scale
Find fourth proportional to 30,634.63, 42,270.82 and 19,148.19
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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.