Home / 15,140.26-20,894.55-8,425.87

Finding the Fourth Proportional to 15,140.26, 20,894.55 and 8,425.87

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Solution

The fourth proportional to 15,140.26, 20,894.55 and 8,425.87 is: 11,628.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.26 : 20,894.55 = 8,425.87 : x
  2. Step 2: Convert to fraction form
    15,140.26/20,894.55 = 8,425.87/x
  3. Step 3: Cross multiply
    15,140.26x = 20,894.55 × 8,425.87
  4. Step 4: Simplify right side
    15,140.26x = 176,054,719.88
  5. Step 5: Solve for x
    x = 176,054,719.88/15,140.26
  6. Step 6: Final answer
    x = 11,628.25

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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.