Home / 20,108.76-30,113.90-10,252.68

Finding the Fourth Proportional to 20,108.76, 30,113.90 and 10,252.68

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Solution

The fourth proportional to 20,108.76, 30,113.90 and 10,252.68 is: 15,353.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.76 : 30,113.90 = 10,252.68 : x
  2. Step 2: Convert to fraction form
    20,108.76/30,113.90 = 10,252.68/x
  3. Step 3: Cross multiply
    20,108.76x = 30,113.90 × 10,252.68
  4. Step 4: Simplify right side
    20,108.76x = 308,748,180.25
  5. Step 5: Solve for x
    x = 308,748,180.25/20,108.76
  6. Step 6: Final answer
    x = 15,353.91

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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.