Home / 10,215.12-15,296.64-9,359.76

Finding the Fourth Proportional to 10,215.12, 15,296.64 and 9,359.76

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Solution

The fourth proportional to 10,215.12, 15,296.64 and 9,359.76 is: 14,015.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.12 : 15,296.64 = 9,359.76 : x
  2. Step 2: Convert to fraction form
    10,215.12/15,296.64 = 9,359.76/x
  3. Step 3: Cross multiply
    10,215.12x = 15,296.64 × 9,359.76
  4. Step 4: Simplify right side
    10,215.12x = 143,172,879.21
  5. Step 5: Solve for x
    x = 143,172,879.21/10,215.12
  6. Step 6: Final answer
    x = 14,015.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.