Home / 20,295.02-30,439.82-7,145.76

Finding the Fourth Proportional to 20,295.02, 30,439.82 and 7,145.76

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Solution

The fourth proportional to 20,295.02, 30,439.82 and 7,145.76 is: 10,717.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,295.02 : 30,439.82 = 7,145.76 : x
  2. Step 2: Convert to fraction form
    20,295.02/30,439.82 = 7,145.76/x
  3. Step 3: Cross multiply
    20,295.02x = 30,439.82 × 7,145.76
  4. Step 4: Simplify right side
    20,295.02x = 217,515,648.16
  5. Step 5: Solve for x
    x = 217,515,648.16/20,295.02
  6. Step 6: Final answer
    x = 10,717.69

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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.