Home / 20,966.96-31,452.63-10,439.58

Finding the Fourth Proportional to 20,966.96, 31,452.63 and 10,439.58

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Solution

The fourth proportional to 20,966.96, 31,452.63 and 10,439.58 is: 15,660.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.96 : 31,452.63 = 10,439.58 : x
  2. Step 2: Convert to fraction form
    20,966.96/31,452.63 = 10,439.58/x
  3. Step 3: Cross multiply
    20,966.96x = 31,452.63 × 10,439.58
  4. Step 4: Simplify right side
    20,966.96x = 328,352,247.10
  5. Step 5: Solve for x
    x = 328,352,247.10/20,966.96
  6. Step 6: Final answer
    x = 15,660.46

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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.