Home / 20,306.16-28,028.46-11,810.28

Finding the Fourth Proportional to 20,306.16, 28,028.46 and 11,810.28

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Solution

The fourth proportional to 20,306.16, 28,028.46 and 11,810.28 is: 16,301.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.16 : 28,028.46 = 11,810.28 : x
  2. Step 2: Convert to fraction form
    20,306.16/28,028.46 = 11,810.28/x
  3. Step 3: Cross multiply
    20,306.16x = 28,028.46 × 11,810.28
  4. Step 4: Simplify right side
    20,306.16x = 331,023,960.57
  5. Step 5: Solve for x
    x = 331,023,960.57/20,306.16
  6. Step 6: Final answer
    x = 16,301.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.