Home / 28,211.43-38,929.97-15,462.36

Finding the Fourth Proportional to 28,211.43, 38,929.97 and 15,462.36

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Solution

The fourth proportional to 28,211.43, 38,929.97 and 15,462.36 is: 21,337.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.43 : 38,929.97 = 15,462.36 : x
  2. Step 2: Convert to fraction form
    28,211.43/38,929.97 = 15,462.36/x
  3. Step 3: Cross multiply
    28,211.43x = 38,929.97 × 15,462.36
  4. Step 4: Simplify right side
    28,211.43x = 601,949,016.28
  5. Step 5: Solve for x
    x = 601,949,016.28/28,211.43
  6. Step 6: Final answer
    x = 21,337.07

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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.