Home / 20,005.30-30,026.78-10,151.65

Finding the Fourth Proportional to 20,005.30, 30,026.78 and 10,151.65

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Solution

The fourth proportional to 20,005.30, 30,026.78 and 10,151.65 is: 15,237.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,005.30 : 30,026.78 = 10,151.65 : x
  2. Step 2: Convert to fraction form
    20,005.30/30,026.78 = 10,151.65/x
  3. Step 3: Cross multiply
    20,005.30x = 30,026.78 × 10,151.65
  4. Step 4: Simplify right side
    20,005.30x = 304,821,361.19
  5. Step 5: Solve for x
    x = 304,821,361.19/20,005.30
  6. Step 6: Final answer
    x = 15,237.03

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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.