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Finding the Fourth Proportional to 28,335.95, 42,506.30 and 8,614.68

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Solution

The fourth proportional to 28,335.95, 42,506.30 and 8,614.68 is: 12,922.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,335.95 : 42,506.30 = 8,614.68 : x
  2. Step 2: Convert to fraction form
    28,335.95/42,506.30 = 8,614.68/x
  3. Step 3: Cross multiply
    28,335.95x = 42,506.30 × 8,614.68
  4. Step 4: Simplify right side
    28,335.95x = 366,178,002.32
  5. Step 5: Solve for x
    x = 366,178,002.32/28,335.95
  6. Step 6: Final answer
    x = 12,922.74

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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.