Home / 42,422.89-63,635.25-12,840.68

Finding the Fourth Proportional to 42,422.89, 63,635.25 and 12,840.68

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Solution

The fourth proportional to 42,422.89, 63,635.25 and 12,840.68 is: 19,261.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,422.89 : 63,635.25 = 12,840.68 : x
  2. Step 2: Convert to fraction form
    42,422.89/63,635.25 = 12,840.68/x
  3. Step 3: Cross multiply
    42,422.89x = 63,635.25 × 12,840.68
  4. Step 4: Simplify right side
    42,422.89x = 817,119,881.97
  5. Step 5: Solve for x
    x = 817,119,881.97/42,422.89
  6. Step 6: Final answer
    x = 19,261.30

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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.