Home / 20,875.92-28,808.10-11,444.28

Finding the Fourth Proportional to 20,875.92, 28,808.10 and 11,444.28

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Solution

The fourth proportional to 20,875.92, 28,808.10 and 11,444.28 is: 15,792.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.92 : 28,808.10 = 11,444.28 : x
  2. Step 2: Convert to fraction form
    20,875.92/28,808.10 = 11,444.28/x
  3. Step 3: Cross multiply
    20,875.92x = 28,808.10 × 11,444.28
  4. Step 4: Simplify right side
    20,875.92x = 329,687,962.67
  5. Step 5: Solve for x
    x = 329,687,962.67/20,875.92
  6. Step 6: Final answer
    x = 15,792.74

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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.