Home / 12,687.90-19,053.45-9,404.70

Finding the Fourth Proportional to 12,687.90, 19,053.45 and 9,404.70

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Solution

The fourth proportional to 12,687.90, 19,053.45 and 9,404.70 is: 14,123.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.90 : 19,053.45 = 9,404.70 : x
  2. Step 2: Convert to fraction form
    12,687.90/19,053.45 = 9,404.70/x
  3. Step 3: Cross multiply
    12,687.90x = 19,053.45 × 9,404.70
  4. Step 4: Simplify right side
    12,687.90x = 179,191,981.22
  5. Step 5: Solve for x
    x = 179,191,981.22/12,687.90
  6. Step 6: Final answer
    x = 14,123.06

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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.