Home / 42,469.82-63,705.12-12,887.66

Finding the Fourth Proportional to 42,469.82, 63,705.12 and 12,887.66

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Solution

The fourth proportional to 42,469.82, 63,705.12 and 12,887.66 is: 19,331.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,469.82 : 63,705.12 = 12,887.66 : x
  2. Step 2: Convert to fraction form
    42,469.82/63,705.12 = 12,887.66/x
  3. Step 3: Cross multiply
    42,469.82x = 63,705.12 × 12,887.66
  4. Step 4: Simplify right side
    42,469.82x = 821,009,805.24
  5. Step 5: Solve for x
    x = 821,009,805.24/42,469.82
  6. Step 6: Final answer
    x = 19,331.60

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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.