Home / 28,635.17-42,956.80-8,915.72

Finding the Fourth Proportional to 28,635.17, 42,956.80 and 8,915.72

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Solution

The fourth proportional to 28,635.17, 42,956.80 and 8,915.72 is: 13,374.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,635.17 : 42,956.80 = 8,915.72 : x
  2. Step 2: Convert to fraction form
    28,635.17/42,956.80 = 8,915.72/x
  3. Step 3: Cross multiply
    28,635.17x = 42,956.80 × 8,915.72
  4. Step 4: Simplify right side
    28,635.17x = 382,990,800.90
  5. Step 5: Solve for x
    x = 382,990,800.90/28,635.17
  6. Step 6: Final answer
    x = 13,374.84

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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.