Home / 10,945.60-16,418.40-6,560.80

Finding the Fourth Proportional to 10,945.60, 16,418.40 and 6,560.80

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Solution

The fourth proportional to 10,945.60, 16,418.40 and 6,560.80 is: 9,841.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,945.60 : 16,418.40 = 6,560.80 : x
  2. Step 2: Convert to fraction form
    10,945.60/16,418.40 = 6,560.80/x
  3. Step 3: Cross multiply
    10,945.60x = 16,418.40 × 6,560.80
  4. Step 4: Simplify right side
    10,945.60x = 107,717,838.72
  5. Step 5: Solve for x
    x = 107,717,838.72/10,945.60
  6. Step 6: Final answer
    x = 9,841.20

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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.