Home / 42,172.84-63,215.19-19,959.76

Finding the Fourth Proportional to 42,172.84, 63,215.19 and 19,959.76

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Solution

The fourth proportional to 42,172.84, 63,215.19 and 19,959.76 is: 29,918.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,172.84 : 63,215.19 = 19,959.76 : x
  2. Step 2: Convert to fraction form
    42,172.84/63,215.19 = 19,959.76/x
  3. Step 3: Cross multiply
    42,172.84x = 63,215.19 × 19,959.76
  4. Step 4: Simplify right side
    42,172.84x = 1,261,760,020.75
  5. Step 5: Solve for x
    x = 1,261,760,020.75/42,172.84
  6. Step 6: Final answer
    x = 29,918.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.