Home / 10,079.13-15,120.26-5,146.10

Finding the Fourth Proportional to 10,079.13, 15,120.26 and 5,146.10

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Solution

The fourth proportional to 10,079.13, 15,120.26 and 5,146.10 is: 7,719.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,079.13 : 15,120.26 = 5,146.10 : x
  2. Step 2: Convert to fraction form
    10,079.13/15,120.26 = 5,146.10/x
  3. Step 3: Cross multiply
    10,079.13x = 15,120.26 × 5,146.10
  4. Step 4: Simplify right side
    10,079.13x = 77,810,369.99
  5. Step 5: Solve for x
    x = 77,810,369.99/10,079.13
  6. Step 6: Final answer
    x = 7,719.95

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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.