Home / 28,207.68-42,312.12-9,488.28

Finding the Fourth Proportional to 28,207.68, 42,312.12 and 9,488.28

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Solution

The fourth proportional to 28,207.68, 42,312.12 and 9,488.28 is: 14,232.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,207.68 : 42,312.12 = 9,488.28 : x
  2. Step 2: Convert to fraction form
    28,207.68/42,312.12 = 9,488.28/x
  3. Step 3: Cross multiply
    28,207.68x = 42,312.12 × 9,488.28
  4. Step 4: Simplify right side
    28,207.68x = 401,469,241.95
  5. Step 5: Solve for x
    x = 401,469,241.95/28,207.68
  6. Step 6: Final answer
    x = 14,232.62

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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.