Home / 20,233.74-30,200.78-18,987.15

Finding the Fourth Proportional to 20,233.74, 30,200.78 and 18,987.15

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Solution

The fourth proportional to 20,233.74, 30,200.78 and 18,987.15 is: 28,340.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,233.74 : 30,200.78 = 18,987.15 : x
  2. Step 2: Convert to fraction form
    20,233.74/30,200.78 = 18,987.15/x
  3. Step 3: Cross multiply
    20,233.74x = 30,200.78 × 18,987.15
  4. Step 4: Simplify right side
    20,233.74x = 573,426,645.04
  5. Step 5: Solve for x
    x = 573,426,645.04/20,233.74
  6. Step 6: Final answer
    x = 28,340.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.