Home / 10,990.08-15,157.94-9,459.61

Finding the Fourth Proportional to 10,990.08, 15,157.94 and 9,459.61

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Solution

The fourth proportional to 10,990.08, 15,157.94 and 9,459.61 is: 13,047.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.08 : 15,157.94 = 9,459.61 : x
  2. Step 2: Convert to fraction form
    10,990.08/15,157.94 = 9,459.61/x
  3. Step 3: Cross multiply
    10,990.08x = 15,157.94 × 9,459.61
  4. Step 4: Simplify right side
    10,990.08x = 143,388,128.73
  5. Step 5: Solve for x
    x = 143,388,128.73/10,990.08
  6. Step 6: Final answer
    x = 13,047.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.