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Finding the Fourth Proportional to 28,606.59, 42,909.41 and 8,885.16

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Solution

The fourth proportional to 28,606.59, 42,909.41 and 8,885.16 is: 13,327.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,606.59 : 42,909.41 = 8,885.16 : x
  2. Step 2: Convert to fraction form
    28,606.59/42,909.41 = 8,885.16/x
  3. Step 3: Cross multiply
    28,606.59x = 42,909.41 × 8,885.16
  4. Step 4: Simplify right side
    28,606.59x = 381,256,928.93
  5. Step 5: Solve for x
    x = 381,256,928.93/28,606.59
  6. Step 6: Final answer
    x = 13,327.59

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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.