Home / 15,456.68-21,330.34-9,081.56

Finding the Fourth Proportional to 15,456.68, 21,330.34 and 9,081.56

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Solution

The fourth proportional to 15,456.68, 21,330.34 and 9,081.56 is: 12,532.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.68 : 21,330.34 = 9,081.56 : x
  2. Step 2: Convert to fraction form
    15,456.68/21,330.34 = 9,081.56/x
  3. Step 3: Cross multiply
    15,456.68x = 21,330.34 × 9,081.56
  4. Step 4: Simplify right side
    15,456.68x = 193,712,762.53
  5. Step 5: Solve for x
    x = 193,712,762.53/15,456.68
  6. Step 6: Final answer
    x = 12,532.62

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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.