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Finding the Fourth Proportional to 18,695.80, 28,044.92 and 7,008.31

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Solution

The fourth proportional to 18,695.80, 28,044.92 and 7,008.31 is: 10,512.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695.80 : 28,044.92 = 7,008.31 : x
  2. Step 2: Convert to fraction form
    18,695.80/28,044.92 = 7,008.31/x
  3. Step 3: Cross multiply
    18,695.80x = 28,044.92 × 7,008.31
  4. Step 4: Simplify right side
    18,695.80x = 196,547,493.29
  5. Step 5: Solve for x
    x = 196,547,493.29/18,695.80
  6. Step 6: Final answer
    x = 10,512.92

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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.