Home / 13,560.40-20,340.60-8,909.80

Finding the Fourth Proportional to 13,560.40, 20,340.60 and 8,909.80

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Solution

The fourth proportional to 13,560.40, 20,340.60 and 8,909.80 is: 13,364.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560.40 : 20,340.60 = 8,909.80 : x
  2. Step 2: Convert to fraction form
    13,560.40/20,340.60 = 8,909.80/x
  3. Step 3: Cross multiply
    13,560.40x = 20,340.60 × 8,909.80
  4. Step 4: Simplify right side
    13,560.40x = 181,230,677.88
  5. Step 5: Solve for x
    x = 181,230,677.88/13,560.40
  6. Step 6: Final answer
    x = 13,364.70

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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.