Home / 13,211.40-19,793.10-10,456.20

Finding the Fourth Proportional to 13,211.40, 19,793.10 and 10,456.20

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Solution

The fourth proportional to 13,211.40, 19,793.10 and 10,456.20 is: 15,665.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.40 : 19,793.10 = 10,456.20 : x
  2. Step 2: Convert to fraction form
    13,211.40/19,793.10 = 10,456.20/x
  3. Step 3: Cross multiply
    13,211.40x = 19,793.10 × 10,456.20
  4. Step 4: Simplify right side
    13,211.40x = 206,960,612.22
  5. Step 5: Solve for x
    x = 206,960,612.22/13,211.40
  6. Step 6: Final answer
    x = 15,665.31

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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.