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Finding the Fourth Proportional to 18,107.60, 23,565.80 and 18,107.60

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Solution

The fourth proportional to 18,107.60, 23,565.80 and 18,107.60 is: 23,565.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,107.60 : 23,565.80 = 18,107.60 : x
  2. Step 2: Convert to fraction form
    18,107.60/23,565.80 = 18,107.60/x
  3. Step 3: Cross multiply
    18,107.60x = 23,565.80 × 18,107.60
  4. Step 4: Simplify right side
    18,107.60x = 426,720,080.08
  5. Step 5: Solve for x
    x = 426,720,080.08/18,107.60
  6. Step 6: Final answer
    x = 23,565.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.