Home / 10,921.90-16,346.40-9,609.70

Finding the Fourth Proportional to 10,921.90, 16,346.40 and 9,609.70

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Solution

The fourth proportional to 10,921.90, 16,346.40 and 9,609.70 is: 14,382.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.90 : 16,346.40 = 9,609.70 : x
  2. Step 2: Convert to fraction form
    10,921.90/16,346.40 = 9,609.70/x
  3. Step 3: Cross multiply
    10,921.90x = 16,346.40 × 9,609.70
  4. Step 4: Simplify right side
    10,921.90x = 157,084,000.08
  5. Step 5: Solve for x
    x = 157,084,000.08/10,921.90
  6. Step 6: Final answer
    x = 14,382.48

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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.