Home / 12,359.76-18,539.64-3,126.48

Finding the Fourth Proportional to 12,359.76, 18,539.64 and 3,126.48

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Solution

The fourth proportional to 12,359.76, 18,539.64 and 3,126.48 is: 4,689.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,359.76 : 18,539.64 = 3,126.48 : x
  2. Step 2: Convert to fraction form
    12,359.76/18,539.64 = 3,126.48/x
  3. Step 3: Cross multiply
    12,359.76x = 18,539.64 × 3,126.48
  4. Step 4: Simplify right side
    12,359.76x = 57,963,813.67
  5. Step 5: Solve for x
    x = 57,963,813.67/12,359.76
  6. Step 6: Final answer
    x = 4,689.72

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Similar ratio
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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.