Home / 10,318.76-15,476.16-2,921.43

Finding the Fourth Proportional to 10,318.76, 15,476.16 and 2,921.43

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Solution

The fourth proportional to 10,318.76, 15,476.16 and 2,921.43 is: 4,381.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,318.76 : 15,476.16 = 2,921.43 : x
  2. Step 2: Convert to fraction form
    10,318.76/15,476.16 = 2,921.43/x
  3. Step 3: Cross multiply
    10,318.76x = 15,476.16 × 2,921.43
  4. Step 4: Simplify right side
    10,318.76x = 45,212,518.11
  5. Step 5: Solve for x
    x = 45,212,518.11/10,318.76
  6. Step 6: Final answer
    x = 4,381.58

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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.