Home / 15,179.68-20,960.40-10,455.76

Finding the Fourth Proportional to 15,179.68, 20,960.40 and 10,455.76

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Solution

The fourth proportional to 15,179.68, 20,960.40 and 10,455.76 is: 14,437.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,179.68 : 20,960.40 = 10,455.76 : x
  2. Step 2: Convert to fraction form
    15,179.68/20,960.40 = 10,455.76/x
  3. Step 3: Cross multiply
    15,179.68x = 20,960.40 × 10,455.76
  4. Step 4: Simplify right side
    15,179.68x = 219,156,911.90
  5. Step 5: Solve for x
    x = 219,156,911.90/15,179.68
  6. Step 6: Final answer
    x = 14,437.52

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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.