Home / 10,887.78-16,331.70-9,042.60

Finding the Fourth Proportional to 10,887.78, 16,331.70 and 9,042.60

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Solution

The fourth proportional to 10,887.78, 16,331.70 and 9,042.60 is: 13,563.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.78 : 16,331.70 = 9,042.60 : x
  2. Step 2: Convert to fraction form
    10,887.78/16,331.70 = 9,042.60/x
  3. Step 3: Cross multiply
    10,887.78x = 16,331.70 × 9,042.60
  4. Step 4: Simplify right side
    10,887.78x = 147,681,030.42
  5. Step 5: Solve for x
    x = 147,681,030.42/10,887.78
  6. Step 6: Final answer
    x = 13,563.92

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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.