Home / 10,387.56-15,555.87-9,389.10

Finding the Fourth Proportional to 10,387.56, 15,555.87 and 9,389.10

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Solution

The fourth proportional to 10,387.56, 15,555.87 and 9,389.10 is: 14,060.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,387.56 : 15,555.87 = 9,389.10 : x
  2. Step 2: Convert to fraction form
    10,387.56/15,555.87 = 9,389.10/x
  3. Step 3: Cross multiply
    10,387.56x = 15,555.87 × 9,389.10
  4. Step 4: Simplify right side
    10,387.56x = 146,055,619.02
  5. Step 5: Solve for x
    x = 146,055,619.02/10,387.56
  6. Step 6: Final answer
    x = 14,060.63

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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.