Home / 15,318.88-21,134.51-10,016.76

Finding the Fourth Proportional to 15,318.88, 21,134.51 and 10,016.76

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Solution

The fourth proportional to 15,318.88, 21,134.51 and 10,016.76 is: 13,819.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318.88 : 21,134.51 = 10,016.76 : x
  2. Step 2: Convert to fraction form
    15,318.88/21,134.51 = 10,016.76/x
  3. Step 3: Cross multiply
    15,318.88x = 21,134.51 × 10,016.76
  4. Step 4: Simplify right side
    15,318.88x = 211,699,278.96
  5. Step 5: Solve for x
    x = 211,699,278.96/15,318.88
  6. Step 6: Final answer
    x = 13,819.50

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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.