Home / 26,129.19-39,191.12-7,155.51

Finding the Fourth Proportional to 26,129.19, 39,191.12 and 7,155.51

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Solution

The fourth proportional to 26,129.19, 39,191.12 and 7,155.51 is: 10,732.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,129.19 : 39,191.12 = 7,155.51 : x
  2. Step 2: Convert to fraction form
    26,129.19/39,191.12 = 7,155.51/x
  3. Step 3: Cross multiply
    26,129.19x = 39,191.12 × 7,155.51
  4. Step 4: Simplify right side
    26,129.19x = 280,432,605.71
  5. Step 5: Solve for x
    x = 280,432,605.71/26,129.19
  6. Step 6: Final answer
    x = 10,732.54

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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.