Home / 20,117.20-30,204.60-11,369.20

Finding the Fourth Proportional to 20,117.20, 30,204.60 and 11,369.20

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Solution

The fourth proportional to 20,117.20, 30,204.60 and 11,369.20 is: 17,070.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.20 : 30,204.60 = 11,369.20 : x
  2. Step 2: Convert to fraction form
    20,117.20/30,204.60 = 11,369.20/x
  3. Step 3: Cross multiply
    20,117.20x = 30,204.60 × 11,369.20
  4. Step 4: Simplify right side
    20,117.20x = 343,402,138.32
  5. Step 5: Solve for x
    x = 343,402,138.32/20,117.20
  6. Step 6: Final answer
    x = 17,070.08

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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.