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Finding the Fourth Proportional to 28,606.08, 42,909.20 and 16,903.20

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Solution

The fourth proportional to 28,606.08, 42,909.20 and 16,903.20 is: 25,354.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,606.08 : 42,909.20 = 16,903.20 : x
  2. Step 2: Convert to fraction form
    28,606.08/42,909.20 = 16,903.20/x
  3. Step 3: Cross multiply
    28,606.08x = 42,909.20 × 16,903.20
  4. Step 4: Simplify right side
    28,606.08x = 725,302,789.44
  5. Step 5: Solve for x
    x = 725,302,789.44/28,606.08
  6. Step 6: Final answer
    x = 25,354.85

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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.