Home / 15,628.72-21,545.20-11,144.72

Finding the Fourth Proportional to 15,628.72, 21,545.20 and 11,144.72

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Solution

The fourth proportional to 15,628.72, 21,545.20 and 11,144.72 is: 15,363.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,628.72 : 21,545.20 = 11,144.72 : x
  2. Step 2: Convert to fraction form
    15,628.72/21,545.20 = 11,144.72/x
  3. Step 3: Cross multiply
    15,628.72x = 21,545.20 × 11,144.72
  4. Step 4: Simplify right side
    15,628.72x = 240,115,221.34
  5. Step 5: Solve for x
    x = 240,115,221.34/15,628.72
  6. Step 6: Final answer
    x = 15,363.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.