Home / 15,923.88-21,981-10,616.76

Finding the Fourth Proportional to 15,923.88, 21,981 and 10,616.76

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Solution

The fourth proportional to 15,923.88, 21,981 and 10,616.76 is: 14,655.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,923.88 : 21,981 = 10,616.76 : x
  2. Step 2: Convert to fraction form
    15,923.88/21,981 = 10,616.76/x
  3. Step 3: Cross multiply
    15,923.88x = 21,981 × 10,616.76
  4. Step 4: Simplify right side
    15,923.88x = 233,367,001.56
  5. Step 5: Solve for x
    x = 233,367,001.56/15,923.88
  6. Step 6: Final answer
    x = 14,655.16

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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.