Home / 10,316.11-15,443.87-9,331.20

Finding the Fourth Proportional to 10,316.11, 15,443.87 and 9,331.20

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Solution

The fourth proportional to 10,316.11, 15,443.87 and 9,331.20 is: 13,969.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,316.11 : 15,443.87 = 9,331.20 : x
  2. Step 2: Convert to fraction form
    10,316.11/15,443.87 = 9,331.20/x
  3. Step 3: Cross multiply
    10,316.11x = 15,443.87 × 9,331.20
  4. Step 4: Simplify right side
    10,316.11x = 144,109,793.09
  5. Step 5: Solve for x
    x = 144,109,793.09/10,316.11
  6. Step 6: Final answer
    x = 13,969.39

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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.