Home / 15,109.38-20,826.70-10,262.60

Finding the Fourth Proportional to 15,109.38, 20,826.70 and 10,262.60

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Solution

The fourth proportional to 15,109.38, 20,826.70 and 10,262.60 is: 14,145.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,109.38 : 20,826.70 = 10,262.60 : x
  2. Step 2: Convert to fraction form
    15,109.38/20,826.70 = 10,262.60/x
  3. Step 3: Cross multiply
    15,109.38x = 20,826.70 × 10,262.60
  4. Step 4: Simplify right side
    15,109.38x = 213,736,091.42
  5. Step 5: Solve for x
    x = 213,736,091.42/15,109.38
  6. Step 6: Final answer
    x = 14,145.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.