Home / 20,159.32-30,237.36-12,742.15

Finding the Fourth Proportional to 20,159.32, 30,237.36 and 12,742.15

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Solution

The fourth proportional to 20,159.32, 30,237.36 and 12,742.15 is: 19,112.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.32 : 30,237.36 = 12,742.15 : x
  2. Step 2: Convert to fraction form
    20,159.32/30,237.36 = 12,742.15/x
  3. Step 3: Cross multiply
    20,159.32x = 30,237.36 × 12,742.15
  4. Step 4: Simplify right side
    20,159.32x = 385,288,976.72
  5. Step 5: Solve for x
    x = 385,288,976.72/20,159.32
  6. Step 6: Final answer
    x = 19,112.20

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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.