Home / 30,597.81-42,191.24-21,149.97

Finding the Fourth Proportional to 30,597.81, 42,191.24 and 21,149.97

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Solution

The fourth proportional to 30,597.81, 42,191.24 and 21,149.97 is: 29,163.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,597.81 : 42,191.24 = 21,149.97 : x
  2. Step 2: Convert to fraction form
    30,597.81/42,191.24 = 21,149.97/x
  3. Step 3: Cross multiply
    30,597.81x = 42,191.24 × 21,149.97
  4. Step 4: Simplify right side
    30,597.81x = 892,343,460.26
  5. Step 5: Solve for x
    x = 892,343,460.26/30,597.81
  6. Step 6: Final answer
    x = 29,163.64

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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.