Home / 20,926.32-31,400.16-13,911.12

Finding the Fourth Proportional to 20,926.32, 31,400.16 and 13,911.12

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Solution

The fourth proportional to 20,926.32, 31,400.16 and 13,911.12 is: 20,873.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.32 : 31,400.16 = 13,911.12 : x
  2. Step 2: Convert to fraction form
    20,926.32/31,400.16 = 13,911.12/x
  3. Step 3: Cross multiply
    20,926.32x = 31,400.16 × 13,911.12
  4. Step 4: Simplify right side
    20,926.32x = 436,811,393.78
  5. Step 5: Solve for x
    x = 436,811,393.78/20,926.32
  6. Step 6: Final answer
    x = 20,873.78

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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.