Home / 15,441.70-23,130.15-12,139.06

Finding the Fourth Proportional to 15,441.70, 23,130.15 and 12,139.06

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Solution

The fourth proportional to 15,441.70, 23,130.15 and 12,139.06 is: 18,183.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,441.70 : 23,130.15 = 12,139.06 : x
  2. Step 2: Convert to fraction form
    15,441.70/23,130.15 = 12,139.06/x
  3. Step 3: Cross multiply
    15,441.70x = 23,130.15 × 12,139.06
  4. Step 4: Simplify right side
    15,441.70x = 280,778,278.66
  5. Step 5: Solve for x
    x = 280,778,278.66/15,441.70
  6. Step 6: Final answer
    x = 18,183.12

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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.