Home / 19,172.16-28,753.92-7,479.36

Finding the Fourth Proportional to 19,172.16, 28,753.92 and 7,479.36

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Solution

The fourth proportional to 19,172.16, 28,753.92 and 7,479.36 is: 11,217.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,172.16 : 28,753.92 = 7,479.36 : x
  2. Step 2: Convert to fraction form
    19,172.16/28,753.92 = 7,479.36/x
  3. Step 3: Cross multiply
    19,172.16x = 28,753.92 × 7,479.36
  4. Step 4: Simplify right side
    19,172.16x = 215,060,919.09
  5. Step 5: Solve for x
    x = 215,060,919.09/19,172.16
  6. Step 6: Final answer
    x = 11,217.35

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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.