Home / 28,712.52-39,612.03-21,176.94

Finding the Fourth Proportional to 28,712.52, 39,612.03 and 21,176.94

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Solution

The fourth proportional to 28,712.52, 39,612.03 and 21,176.94 is: 29,215.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.52 : 39,612.03 = 21,176.94 : x
  2. Step 2: Convert to fraction form
    28,712.52/39,612.03 = 21,176.94/x
  3. Step 3: Cross multiply
    28,712.52x = 39,612.03 × 21,176.94
  4. Step 4: Simplify right side
    28,712.52x = 838,861,582.59
  5. Step 5: Solve for x
    x = 838,861,582.59/28,712.52
  6. Step 6: Final answer
    x = 29,215.88

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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.