Home / 42,101.70-63,162.90-12,519.36

Finding the Fourth Proportional to 42,101.70, 63,162.90 and 12,519.36

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Solution

The fourth proportional to 42,101.70, 63,162.90 and 12,519.36 is: 18,782.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,101.70 : 63,162.90 = 12,519.36 : x
  2. Step 2: Convert to fraction form
    42,101.70/63,162.90 = 12,519.36/x
  3. Step 3: Cross multiply
    42,101.70x = 63,162.90 × 12,519.36
  4. Step 4: Simplify right side
    42,101.70x = 790,759,083.74
  5. Step 5: Solve for x
    x = 790,759,083.74/42,101.70
  6. Step 6: Final answer
    x = 18,782.12

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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.