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Finding the Fourth Proportional to 28,554.18, 42,831.27 and 8,832.30

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Solution

The fourth proportional to 28,554.18, 42,831.27 and 8,832.30 is: 13,248.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,554.18 : 42,831.27 = 8,832.30 : x
  2. Step 2: Convert to fraction form
    28,554.18/42,831.27 = 8,832.30/x
  3. Step 3: Cross multiply
    28,554.18x = 42,831.27 × 8,832.30
  4. Step 4: Simplify right side
    28,554.18x = 378,298,626.02
  5. Step 5: Solve for x
    x = 378,298,626.02/28,554.18
  6. Step 6: Final answer
    x = 13,248.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.