Home / 20,306.16-28,023.57-12,347.10

Finding the Fourth Proportional to 20,306.16, 28,023.57 and 12,347.10

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Solution

The fourth proportional to 20,306.16, 28,023.57 and 12,347.10 is: 17,039.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.16 : 28,023.57 = 12,347.10 : x
  2. Step 2: Convert to fraction form
    20,306.16/28,023.57 = 12,347.10/x
  3. Step 3: Cross multiply
    20,306.16x = 28,023.57 × 12,347.10
  4. Step 4: Simplify right side
    20,306.16x = 346,009,821.15
  5. Step 5: Solve for x
    x = 346,009,821.15/20,306.16
  6. Step 6: Final answer
    x = 17,039.65

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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.