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Finding the Fourth Proportional to 18,948.88, 28,419 and 9,586.18

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Solution

The fourth proportional to 18,948.88, 28,419 and 9,586.18 is: 14,377.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,948.88 : 28,419 = 9,586.18 : x
  2. Step 2: Convert to fraction form
    18,948.88/28,419 = 9,586.18/x
  3. Step 3: Cross multiply
    18,948.88x = 28,419 × 9,586.18
  4. Step 4: Simplify right side
    18,948.88x = 272,429,649.42
  5. Step 5: Solve for x
    x = 272,429,649.42/18,948.88
  6. Step 6: Final answer
    x = 14,377.08

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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.