Home / 42,265.80-63,374.40-12,679.20

Finding the Fourth Proportional to 42,265.80, 63,374.40 and 12,679.20

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Solution

The fourth proportional to 42,265.80, 63,374.40 and 12,679.20 is: 19,011.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,265.80 : 63,374.40 = 12,679.20 : x
  2. Step 2: Convert to fraction form
    42,265.80/63,374.40 = 12,679.20/x
  3. Step 3: Cross multiply
    42,265.80x = 63,374.40 × 12,679.20
  4. Step 4: Simplify right side
    42,265.80x = 803,536,692.48
  5. Step 5: Solve for x
    x = 803,536,692.48/42,265.80
  6. Step 6: Final answer
    x = 19,011.51

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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.