Home / 20,345.11-28,074.86-11,270.16

Finding the Fourth Proportional to 20,345.11, 28,074.86 and 11,270.16

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Solution

The fourth proportional to 20,345.11, 28,074.86 and 11,270.16 is: 15,552.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.11 : 28,074.86 = 11,270.16 : x
  2. Step 2: Convert to fraction form
    20,345.11/28,074.86 = 11,270.16/x
  3. Step 3: Cross multiply
    20,345.11x = 28,074.86 × 11,270.16
  4. Step 4: Simplify right side
    20,345.11x = 316,408,023.80
  5. Step 5: Solve for x
    x = 316,408,023.80/20,345.11
  6. Step 6: Final answer
    x = 15,552.05

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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.