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Finding the Fourth Proportional to 14,505.04, 20,016.88 and 7,881.04

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Solution

The fourth proportional to 14,505.04, 20,016.88 and 7,881.04 is: 10,875.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,505.04 : 20,016.88 = 7,881.04 : x
  2. Step 2: Convert to fraction form
    14,505.04/20,016.88 = 7,881.04/x
  3. Step 3: Cross multiply
    14,505.04x = 20,016.88 × 7,881.04
  4. Step 4: Simplify right side
    14,505.04x = 157,753,831.96
  5. Step 5: Solve for x
    x = 157,753,831.96/14,505.04
  6. Step 6: Final answer
    x = 10,875.79

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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.