Home / 10,887.40-16,313.18-9,979.56

Finding the Fourth Proportional to 10,887.40, 16,313.18 and 9,979.56

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Solution

The fourth proportional to 10,887.40, 16,313.18 and 9,979.56 is: 14,952.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.40 : 16,313.18 = 9,979.56 : x
  2. Step 2: Convert to fraction form
    10,887.40/16,313.18 = 9,979.56/x
  3. Step 3: Cross multiply
    10,887.40x = 16,313.18 × 9,979.56
  4. Step 4: Simplify right side
    10,887.40x = 162,798,358.60
  5. Step 5: Solve for x
    x = 162,798,358.60/10,887.40
  6. Step 6: Final answer
    x = 14,952.91

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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.