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Finding the Fourth Proportional to 42,143.21, 63,224.22 and 15,848.18

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Solution

The fourth proportional to 42,143.21, 63,224.22 and 15,848.18 is: 23,775.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,143.21 : 63,224.22 = 15,848.18 : x
  2. Step 2: Convert to fraction form
    42,143.21/63,224.22 = 15,848.18/x
  3. Step 3: Cross multiply
    42,143.21x = 63,224.22 × 15,848.18
  4. Step 4: Simplify right side
    42,143.21x = 1,001,988,502.80
  5. Step 5: Solve for x
    x = 1,001,988,502.80/42,143.21
  6. Step 6: Final answer
    x = 23,775.80

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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.