Home / 26,931.20-40,380.60-13,809.20

Finding the Fourth Proportional to 26,931.20, 40,380.60 and 13,809.20

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Solution

The fourth proportional to 26,931.20, 40,380.60 and 13,809.20 is: 20,705.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,931.20 : 40,380.60 = 13,809.20 : x
  2. Step 2: Convert to fraction form
    26,931.20/40,380.60 = 13,809.20/x
  3. Step 3: Cross multiply
    26,931.20x = 40,380.60 × 13,809.20
  4. Step 4: Simplify right side
    26,931.20x = 557,623,781.52
  5. Step 5: Solve for x
    x = 557,623,781.52/26,931.20
  6. Step 6: Final answer
    x = 20,705.49

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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.