Home / 21,141.28-31,688.04-10,032.56

Finding the Fourth Proportional to 21,141.28, 31,688.04 and 10,032.56

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Solution

The fourth proportional to 21,141.28, 31,688.04 and 10,032.56 is: 15,037.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.28 : 31,688.04 = 10,032.56 : x
  2. Step 2: Convert to fraction form
    21,141.28/31,688.04 = 10,032.56/x
  3. Step 3: Cross multiply
    21,141.28x = 31,688.04 × 10,032.56
  4. Step 4: Simplify right side
    21,141.28x = 317,912,162.58
  5. Step 5: Solve for x
    x = 317,912,162.58/21,141.28
  6. Step 6: Final answer
    x = 15,037.51

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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.