Home / 26,830.40-40,207.20-18,612.80

Finding the Fourth Proportional to 26,830.40, 40,207.20 and 18,612.80

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Solution

The fourth proportional to 26,830.40, 40,207.20 and 18,612.80 is: 27,892.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,830.40 : 40,207.20 = 18,612.80 : x
  2. Step 2: Convert to fraction form
    26,830.40/40,207.20 = 18,612.80/x
  3. Step 3: Cross multiply
    26,830.40x = 40,207.20 × 18,612.80
  4. Step 4: Simplify right side
    26,830.40x = 748,368,572.16
  5. Step 5: Solve for x
    x = 748,368,572.16/26,830.40
  6. Step 6: Final answer
    x = 27,892.56

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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.