Home / 10,107.16-15,151.76-5,429.68

Finding the Fourth Proportional to 10,107.16, 15,151.76 and 5,429.68

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Solution

The fourth proportional to 10,107.16, 15,151.76 and 5,429.68 is: 8,139.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,107.16 : 15,151.76 = 5,429.68 : x
  2. Step 2: Convert to fraction form
    10,107.16/15,151.76 = 5,429.68/x
  3. Step 3: Cross multiply
    10,107.16x = 15,151.76 × 5,429.68
  4. Step 4: Simplify right side
    10,107.16x = 82,269,208.24
  5. Step 5: Solve for x
    x = 82,269,208.24/10,107.16
  6. Step 6: Final answer
    x = 8,139.70

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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.