Home / 26,780.64-40,119.12-20,611.68

Finding the Fourth Proportional to 26,780.64, 40,119.12 and 20,611.68

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Solution

The fourth proportional to 26,780.64, 40,119.12 and 20,611.68 is: 30,877.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,780.64 : 40,119.12 = 20,611.68 : x
  2. Step 2: Convert to fraction form
    26,780.64/40,119.12 = 20,611.68/x
  3. Step 3: Cross multiply
    26,780.64x = 40,119.12 × 20,611.68
  4. Step 4: Simplify right side
    26,780.64x = 826,922,463.32
  5. Step 5: Solve for x
    x = 826,922,463.32/26,780.64
  6. Step 6: Final answer
    x = 30,877.62

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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.