Home / 20,009.85-30,013.69-10,148.87

Finding the Fourth Proportional to 20,009.85, 30,013.69 and 10,148.87

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Solution

The fourth proportional to 20,009.85, 30,013.69 and 10,148.87 is: 15,222.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,009.85 : 30,013.69 = 10,148.87 : x
  2. Step 2: Convert to fraction form
    20,009.85/30,013.69 = 10,148.87/x
  3. Step 3: Cross multiply
    20,009.85x = 30,013.69 × 10,148.87
  4. Step 4: Simplify right side
    20,009.85x = 304,605,135.27
  5. Step 5: Solve for x
    x = 304,605,135.27/20,009.85
  6. Step 6: Final answer
    x = 15,222.76

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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.