Home / 10,387.15-15,580.86-2,991.73

Finding the Fourth Proportional to 10,387.15, 15,580.86 and 2,991.73

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Solution

The fourth proportional to 10,387.15, 15,580.86 and 2,991.73 is: 4,487.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.15 : 15,580.86 = 2,991.73 : x
  2. Step 2: Convert to fraction form
    10,387.15/15,580.86 = 2,991.73/x
  3. Step 3: Cross multiply
    10,387.15x = 15,580.86 × 2,991.73
  4. Step 4: Simplify right side
    10,387.15x = 46,613,726.29
  5. Step 5: Solve for x
    x = 46,613,726.29/10,387.15
  6. Step 6: Final answer
    x = 4,487.63

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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.