Home / 39,365.81-54,324.14-21,459.72

Finding the Fourth Proportional to 39,365.81, 54,324.14 and 21,459.72

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Solution

The fourth proportional to 39,365.81, 54,324.14 and 21,459.72 is: 29,614.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,365.81 : 54,324.14 = 21,459.72 : x
  2. Step 2: Convert to fraction form
    39,365.81/54,324.14 = 21,459.72/x
  3. Step 3: Cross multiply
    39,365.81x = 54,324.14 × 21,459.72
  4. Step 4: Simplify right side
    39,365.81x = 1,165,780,726.34
  5. Step 5: Solve for x
    x = 1,165,780,726.34/39,365.81
  6. Step 6: Final answer
    x = 29,614.05

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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.