Home / 39,291.28-54,222.11-21,386.13

Finding the Fourth Proportional to 39,291.28, 54,222.11 and 21,386.13

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Solution

The fourth proportional to 39,291.28, 54,222.11 and 21,386.13 is: 29,512.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,291.28 : 54,222.11 = 21,386.13 : x
  2. Step 2: Convert to fraction form
    39,291.28/54,222.11 = 21,386.13/x
  3. Step 3: Cross multiply
    39,291.28x = 54,222.11 × 21,386.13
  4. Step 4: Simplify right side
    39,291.28x = 1,159,600,863.27
  5. Step 5: Solve for x
    x = 1,159,600,863.27/39,291.28
  6. Step 6: Final answer
    x = 29,512.93

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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.