Home / 15,155.26-20,920.72-10,190.14

Finding the Fourth Proportional to 15,155.26, 20,920.72 and 10,190.14

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Solution

The fourth proportional to 15,155.26, 20,920.72 and 10,190.14 is: 14,066.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.26 : 20,920.72 = 10,190.14 : x
  2. Step 2: Convert to fraction form
    15,155.26/20,920.72 = 10,190.14/x
  3. Step 3: Cross multiply
    15,155.26x = 20,920.72 × 10,190.14
  4. Step 4: Simplify right side
    15,155.26x = 213,185,065.70
  5. Step 5: Solve for x
    x = 213,185,065.70/15,155.26
  6. Step 6: Final answer
    x = 14,066.74

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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.