Home / 42,368.40-63,553.08-12,786.52

Finding the Fourth Proportional to 42,368.40, 63,553.08 and 12,786.52

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Solution

The fourth proportional to 42,368.40, 63,553.08 and 12,786.52 is: 19,179.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,368.40 : 63,553.08 = 12,786.52 : x
  2. Step 2: Convert to fraction form
    42,368.40/63,553.08 = 12,786.52/x
  3. Step 3: Cross multiply
    42,368.40x = 63,553.08 × 12,786.52
  4. Step 4: Simplify right side
    42,368.40x = 812,622,728.48
  5. Step 5: Solve for x
    x = 812,622,728.48/42,368.40
  6. Step 6: Final answer
    x = 19,179.92

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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.