Home / 20,077.29-30,131.10-10,224.84

Finding the Fourth Proportional to 20,077.29, 30,131.10 and 10,224.84

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Solution

The fourth proportional to 20,077.29, 30,131.10 and 10,224.84 is: 15,344.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.29 : 30,131.10 = 10,224.84 : x
  2. Step 2: Convert to fraction form
    20,077.29/30,131.10 = 10,224.84/x
  3. Step 3: Cross multiply
    20,077.29x = 30,131.10 × 10,224.84
  4. Step 4: Simplify right side
    20,077.29x = 308,085,676.52
  5. Step 5: Solve for x
    x = 308,085,676.52/20,077.29
  6. Step 6: Final answer
    x = 15,344.98

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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.