Home / 15,456.28-21,322.89-9,079.99

Finding the Fourth Proportional to 15,456.28, 21,322.89 and 9,079.99

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Solution

The fourth proportional to 15,456.28, 21,322.89 and 9,079.99 is: 12,526.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.28 : 21,322.89 = 9,079.99 : x
  2. Step 2: Convert to fraction form
    15,456.28/21,322.89 = 9,079.99/x
  3. Step 3: Cross multiply
    15,456.28x = 21,322.89 × 9,079.99
  4. Step 4: Simplify right side
    15,456.28x = 193,611,609.10
  5. Step 5: Solve for x
    x = 193,611,609.10/15,456.28
  6. Step 6: Final answer
    x = 12,526.41

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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.