Home / 19,520-29,275.62-8,979.90

Finding the Fourth Proportional to 19,520, 29,275.62 and 8,979.90

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Solution

The fourth proportional to 19,520, 29,275.62 and 8,979.90 is: 13,467.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,520 : 29,275.62 = 8,979.90 : x
  2. Step 2: Convert to fraction form
    19,520/29,275.62 = 8,979.90/x
  3. Step 3: Cross multiply
    19,520x = 29,275.62 × 8,979.90
  4. Step 4: Simplify right side
    19,520x = 262,892,140.04
  5. Step 5: Solve for x
    x = 262,892,140.04/19,520
  6. Step 6: Final answer
    x = 13,467.84

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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.