Home / 21,637.18-29,854.24-13,139.07

Finding the Fourth Proportional to 21,637.18, 29,854.24 and 13,139.07

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Solution

The fourth proportional to 21,637.18, 29,854.24 and 13,139.07 is: 18,128.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,637.18 : 29,854.24 = 13,139.07 : x
  2. Step 2: Convert to fraction form
    21,637.18/29,854.24 = 13,139.07/x
  3. Step 3: Cross multiply
    21,637.18x = 29,854.24 × 13,139.07
  4. Step 4: Simplify right side
    21,637.18x = 392,256,804.36
  5. Step 5: Solve for x
    x = 392,256,804.36/21,637.18
  6. Step 6: Final answer
    x = 18,128.83

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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.