Home / 20,875.20-28,808.88-11,444.16

Finding the Fourth Proportional to 20,875.20, 28,808.88 and 11,444.16

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Solution

The fourth proportional to 20,875.20, 28,808.88 and 11,444.16 is: 15,793.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.20 : 28,808.88 = 11,444.16 : x
  2. Step 2: Convert to fraction form
    20,875.20/28,808.88 = 11,444.16/x
  3. Step 3: Cross multiply
    20,875.20x = 28,808.88 × 11,444.16
  4. Step 4: Simplify right side
    20,875.20x = 329,693,432.14
  5. Step 5: Solve for x
    x = 329,693,432.14/20,875.20
  6. Step 6: Final answer
    x = 15,793.55

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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.