Home / 12,818.60-19,242.30-9,909.80

Finding the Fourth Proportional to 12,818.60, 19,242.30 and 9,909.80

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Solution

The fourth proportional to 12,818.60, 19,242.30 and 9,909.80 is: 14,875.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.60 : 19,242.30 = 9,909.80 : x
  2. Step 2: Convert to fraction form
    12,818.60/19,242.30 = 9,909.80/x
  3. Step 3: Cross multiply
    12,818.60x = 19,242.30 × 9,909.80
  4. Step 4: Simplify right side
    12,818.60x = 190,687,344.54
  5. Step 5: Solve for x
    x = 190,687,344.54/12,818.60
  6. Step 6: Final answer
    x = 14,875.83

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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.