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Finding the Fourth Proportional to 18,672.60, 28,041.30 and 9,924.60

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Solution

The fourth proportional to 18,672.60, 28,041.30 and 9,924.60 is: 14,904.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.60 : 28,041.30 = 9,924.60 : x
  2. Step 2: Convert to fraction form
    18,672.60/28,041.30 = 9,924.60/x
  3. Step 3: Cross multiply
    18,672.60x = 28,041.30 × 9,924.60
  4. Step 4: Simplify right side
    18,672.60x = 278,298,685.98
  5. Step 5: Solve for x
    x = 278,298,685.98/18,672.60
  6. Step 6: Final answer
    x = 14,904.12

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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.