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Finding the Fourth Proportional to 28,446.66, 42,675.49 and 10,915.12

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Solution

The fourth proportional to 28,446.66, 42,675.49 and 10,915.12 is: 16,374.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446.66 : 42,675.49 = 10,915.12 : x
  2. Step 2: Convert to fraction form
    28,446.66/42,675.49 = 10,915.12/x
  3. Step 3: Cross multiply
    28,446.66x = 42,675.49 × 10,915.12
  4. Step 4: Simplify right side
    28,446.66x = 465,808,094.41
  5. Step 5: Solve for x
    x = 465,808,094.41/28,446.66
  6. Step 6: Final answer
    x = 16,374.79

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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.