Home / 13,613.49-20,402.06-7,275.38

Finding the Fourth Proportional to 13,613.49, 20,402.06 and 7,275.38

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Solution

The fourth proportional to 13,613.49, 20,402.06 and 7,275.38 is: 10,903.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.49 : 20,402.06 = 7,275.38 : x
  2. Step 2: Convert to fraction form
    13,613.49/20,402.06 = 7,275.38/x
  3. Step 3: Cross multiply
    13,613.49x = 20,402.06 × 7,275.38
  4. Step 4: Simplify right side
    13,613.49x = 148,432,686.86
  5. Step 5: Solve for x
    x = 148,432,686.86/13,613.49
  6. Step 6: Final answer
    x = 10,903.35

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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.