Home / 21,263.24-31,884.15-12,381.44

Finding the Fourth Proportional to 21,263.24, 31,884.15 and 12,381.44

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Solution

The fourth proportional to 21,263.24, 31,884.15 and 12,381.44 is: 18,565.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263.24 : 31,884.15 = 12,381.44 : x
  2. Step 2: Convert to fraction form
    21,263.24/31,884.15 = 12,381.44/x
  3. Step 3: Cross multiply
    21,263.24x = 31,884.15 × 12,381.44
  4. Step 4: Simplify right side
    21,263.24x = 394,771,530.76
  5. Step 5: Solve for x
    x = 394,771,530.76/21,263.24
  6. Step 6: Final answer
    x = 18,565.92

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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.