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Finding the Fourth Proportional to 17,160.40, 25,740.60 and 10,565.20

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Solution

The fourth proportional to 17,160.40, 25,740.60 and 10,565.20 is: 15,847.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,160.40 : 25,740.60 = 10,565.20 : x
  2. Step 2: Convert to fraction form
    17,160.40/25,740.60 = 10,565.20/x
  3. Step 3: Cross multiply
    17,160.40x = 25,740.60 × 10,565.20
  4. Step 4: Simplify right side
    17,160.40x = 271,954,587.12
  5. Step 5: Solve for x
    x = 271,954,587.12/17,160.40
  6. Step 6: Final answer
    x = 15,847.80

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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.