Home / 20,351.59-30,490.93-7,195.57

Finding the Fourth Proportional to 20,351.59, 30,490.93 and 7,195.57

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Solution

The fourth proportional to 20,351.59, 30,490.93 and 7,195.57 is: 10,780.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.59 : 30,490.93 = 7,195.57 : x
  2. Step 2: Convert to fraction form
    20,351.59/30,490.93 = 7,195.57/x
  3. Step 3: Cross multiply
    20,351.59x = 30,490.93 × 7,195.57
  4. Step 4: Simplify right side
    20,351.59x = 219,399,621.18
  5. Step 5: Solve for x
    x = 219,399,621.18/20,351.59
  6. Step 6: Final answer
    x = 10,780.47

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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.