Home / 42,135.64-63,179-19,948.83

Finding the Fourth Proportional to 42,135.64, 63,179 and 19,948.83

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Solution

The fourth proportional to 42,135.64, 63,179 and 19,948.83 is: 29,911.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,135.64 : 63,179 = 19,948.83 : x
  2. Step 2: Convert to fraction form
    42,135.64/63,179 = 19,948.83/x
  3. Step 3: Cross multiply
    42,135.64x = 63,179 × 19,948.83
  4. Step 4: Simplify right side
    42,135.64x = 1,260,347,130.57
  5. Step 5: Solve for x
    x = 1,260,347,130.57/42,135.64
  6. Step 6: Final answer
    x = 29,911.66

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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.