Home / 20,190.52-30,278.80-7,714.08

Finding the Fourth Proportional to 20,190.52, 30,278.80 and 7,714.08

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Solution

The fourth proportional to 20,190.52, 30,278.80 and 7,714.08 is: 11,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.52 : 30,278.80 = 7,714.08 : x
  2. Step 2: Convert to fraction form
    20,190.52/30,278.80 = 7,714.08/x
  3. Step 3: Cross multiply
    20,190.52x = 30,278.80 × 7,714.08
  4. Step 4: Simplify right side
    20,190.52x = 233,573,085.50
  5. Step 5: Solve for x
    x = 233,573,085.50/20,190.52
  6. Step 6: Final answer
    x = 11,568.45

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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.