Home / 10,387.32-15,580.50-2,991.54

Finding the Fourth Proportional to 10,387.32, 15,580.50 and 2,991.54

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Solution

The fourth proportional to 10,387.32, 15,580.50 and 2,991.54 is: 4,487.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.32 : 15,580.50 = 2,991.54 : x
  2. Step 2: Convert to fraction form
    10,387.32/15,580.50 = 2,991.54/x
  3. Step 3: Cross multiply
    10,387.32x = 15,580.50 × 2,991.54
  4. Step 4: Simplify right side
    10,387.32x = 46,609,688.97
  5. Step 5: Solve for x
    x = 46,609,688.97/10,387.32
  6. Step 6: Final answer
    x = 4,487.17

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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.