Home / 21,191.42-29,249.54-14,479.76

Finding the Fourth Proportional to 21,191.42, 29,249.54 and 14,479.76

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Solution

The fourth proportional to 21,191.42, 29,249.54 and 14,479.76 is: 19,985.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.42 : 29,249.54 = 14,479.76 : x
  2. Step 2: Convert to fraction form
    21,191.42/29,249.54 = 14,479.76/x
  3. Step 3: Cross multiply
    21,191.42x = 29,249.54 × 14,479.76
  4. Step 4: Simplify right side
    21,191.42x = 423,526,100.66
  5. Step 5: Solve for x
    x = 423,526,100.66/21,191.42
  6. Step 6: Final answer
    x = 19,985.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.