Home / 28,505.19-39,337.22-15,929.94

Finding the Fourth Proportional to 28,505.19, 39,337.22 and 15,929.94

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Solution

The fourth proportional to 28,505.19, 39,337.22 and 15,929.94 is: 21,983.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,505.19 : 39,337.22 = 15,929.94 : x
  2. Step 2: Convert to fraction form
    28,505.19/39,337.22 = 15,929.94/x
  3. Step 3: Cross multiply
    28,505.19x = 39,337.22 × 15,929.94
  4. Step 4: Simplify right side
    28,505.19x = 626,639,474.72
  5. Step 5: Solve for x
    x = 626,639,474.72/28,505.19
  6. Step 6: Final answer
    x = 21,983.35

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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.