Home / 15,154.12-20,914.32-8,871.76

Finding the Fourth Proportional to 15,154.12, 20,914.32 and 8,871.76

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Solution

The fourth proportional to 15,154.12, 20,914.32 and 8,871.76 is: 12,243.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,154.12 : 20,914.32 = 8,871.76 : x
  2. Step 2: Convert to fraction form
    15,154.12/20,914.32 = 8,871.76/x
  3. Step 3: Cross multiply
    15,154.12x = 20,914.32 × 8,871.76
  4. Step 4: Simplify right side
    15,154.12x = 185,546,827.60
  5. Step 5: Solve for x
    x = 185,546,827.60/15,154.12
  6. Step 6: Final answer
    x = 12,243.99

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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.