Home / 40,972.80-61,439.04-13,267.20

Finding the Fourth Proportional to 40,972.80, 61,439.04 and 13,267.20

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Solution

The fourth proportional to 40,972.80, 61,439.04 and 13,267.20 is: 19,894.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,972.80 : 61,439.04 = 13,267.20 : x
  2. Step 2: Convert to fraction form
    40,972.80/61,439.04 = 13,267.20/x
  3. Step 3: Cross multiply
    40,972.80x = 61,439.04 × 13,267.20
  4. Step 4: Simplify right side
    40,972.80x = 815,124,031.49
  5. Step 5: Solve for x
    x = 815,124,031.49/40,972.80
  6. Step 6: Final answer
    x = 19,894.27

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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.