Home / 15,154.75-20,913.69-8,867.26

Finding the Fourth Proportional to 15,154.75, 20,913.69 and 8,867.26

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Solution

The fourth proportional to 15,154.75, 20,913.69 and 8,867.26 is: 12,236.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,154.75 : 20,913.69 = 8,867.26 : x
  2. Step 2: Convert to fraction form
    15,154.75/20,913.69 = 8,867.26/x
  3. Step 3: Cross multiply
    15,154.75x = 20,913.69 × 8,867.26
  4. Step 4: Simplify right side
    15,154.75x = 185,447,126.79
  5. Step 5: Solve for x
    x = 185,447,126.79/15,154.75
  6. Step 6: Final answer
    x = 12,236.90

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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.