Home / 12,869.76-19,307.20-5,474.16

Finding the Fourth Proportional to 12,869.76, 19,307.20 and 5,474.16

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Solution

The fourth proportional to 12,869.76, 19,307.20 and 5,474.16 is: 8,212.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,869.76 : 19,307.20 = 5,474.16 : x
  2. Step 2: Convert to fraction form
    12,869.76/19,307.20 = 5,474.16/x
  3. Step 3: Cross multiply
    12,869.76x = 19,307.20 × 5,474.16
  4. Step 4: Simplify right side
    12,869.76x = 105,690,701.95
  5. Step 5: Solve for x
    x = 105,690,701.95/12,869.76
  6. Step 6: Final answer
    x = 8,212.33

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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.