Home / 15,543.88-21,444.13-10,830.90

Finding the Fourth Proportional to 15,543.88, 21,444.13 and 10,830.90

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Solution

The fourth proportional to 15,543.88, 21,444.13 and 10,830.90 is: 14,942.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.88 : 21,444.13 = 10,830.90 : x
  2. Step 2: Convert to fraction form
    15,543.88/21,444.13 = 10,830.90/x
  3. Step 3: Cross multiply
    15,543.88x = 21,444.13 × 10,830.90
  4. Step 4: Simplify right side
    15,543.88x = 232,259,227.62
  5. Step 5: Solve for x
    x = 232,259,227.62/15,543.88
  6. Step 6: Final answer
    x = 14,942.17

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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.