Home / 21,547.42-29,754.14-15,891.97

Finding the Fourth Proportional to 21,547.42, 29,754.14 and 15,891.97

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Solution

The fourth proportional to 21,547.42, 29,754.14 and 15,891.97 is: 21,944.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,547.42 : 29,754.14 = 15,891.97 : x
  2. Step 2: Convert to fraction form
    21,547.42/29,754.14 = 15,891.97/x
  3. Step 3: Cross multiply
    21,547.42x = 29,754.14 × 15,891.97
  4. Step 4: Simplify right side
    21,547.42x = 472,851,885.88
  5. Step 5: Solve for x
    x = 472,851,885.88/21,547.42
  6. Step 6: Final answer
    x = 21,944.71

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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.