Home / 12,159.98-16,778.40-7,440.92

Finding the Fourth Proportional to 12,159.98, 16,778.40 and 7,440.92

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Solution

The fourth proportional to 12,159.98, 16,778.40 and 7,440.92 is: 10,267.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.98 : 16,778.40 = 7,440.92 : x
  2. Step 2: Convert to fraction form
    12,159.98/16,778.40 = 7,440.92/x
  3. Step 3: Cross multiply
    12,159.98x = 16,778.40 × 7,440.92
  4. Step 4: Simplify right side
    12,159.98x = 124,846,732.13
  5. Step 5: Solve for x
    x = 124,846,732.13/12,159.98
  6. Step 6: Final answer
    x = 10,267.02

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.