Home / 18,962.16-28,405.20-9,445.80

Finding the Fourth Proportional to 18,962.16, 28,405.20 and 9,445.80

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Solution

The fourth proportional to 18,962.16, 28,405.20 and 9,445.80 is: 14,149.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962.16 : 28,405.20 = 9,445.80 : x
  2. Step 2: Convert to fraction form
    18,962.16/28,405.20 = 9,445.80/x
  3. Step 3: Cross multiply
    18,962.16x = 28,405.20 × 9,445.80
  4. Step 4: Simplify right side
    18,962.16x = 268,309,838.16
  5. Step 5: Solve for x
    x = 268,309,838.16/18,962.16
  6. Step 6: Final answer
    x = 14,149.75

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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.