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Finding the Fourth Proportional to 17,360.80, 26,041.20 and 8,612.80

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Solution

The fourth proportional to 17,360.80, 26,041.20 and 8,612.80 is: 12,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,360.80 : 26,041.20 = 8,612.80 : x
  2. Step 2: Convert to fraction form
    17,360.80/26,041.20 = 8,612.80/x
  3. Step 3: Cross multiply
    17,360.80x = 26,041.20 × 8,612.80
  4. Step 4: Simplify right side
    17,360.80x = 224,287,647.36
  5. Step 5: Solve for x
    x = 224,287,647.36/17,360.80
  6. Step 6: Final answer
    x = 12,919.20

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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.