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Finding the Fourth Proportional to 18,957.43, 28,442.22 and 9,097.40

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Solution

The fourth proportional to 18,957.43, 28,442.22 and 9,097.40 is: 13,649.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,957.43 : 28,442.22 = 9,097.40 : x
  2. Step 2: Convert to fraction form
    18,957.43/28,442.22 = 9,097.40/x
  3. Step 3: Cross multiply
    18,957.43x = 28,442.22 × 9,097.40
  4. Step 4: Simplify right side
    18,957.43x = 258,750,252.23
  5. Step 5: Solve for x
    x = 258,750,252.23/18,957.43
  6. Step 6: Final answer
    x = 13,649.02

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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.