Home / 19,712.72-29,558.22-13,479.76

Finding the Fourth Proportional to 19,712.72, 29,558.22 and 13,479.76

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Solution

The fourth proportional to 19,712.72, 29,558.22 and 13,479.76 is: 20,212.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,712.72 : 29,558.22 = 13,479.76 : x
  2. Step 2: Convert to fraction form
    19,712.72/29,558.22 = 13,479.76/x
  3. Step 3: Cross multiply
    19,712.72x = 29,558.22 × 13,479.76
  4. Step 4: Simplify right side
    19,712.72x = 398,437,711.63
  5. Step 5: Solve for x
    x = 398,437,711.63/19,712.72
  6. Step 6: Final answer
    x = 20,212.21

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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.