Home / 20,448.22-30,672.64-13,472.90

Finding the Fourth Proportional to 20,448.22, 30,672.64 and 13,472.90

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Solution

The fourth proportional to 20,448.22, 30,672.64 and 13,472.90 is: 20,209.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.22 : 30,672.64 = 13,472.90 : x
  2. Step 2: Convert to fraction form
    20,448.22/30,672.64 = 13,472.90/x
  3. Step 3: Cross multiply
    20,448.22x = 30,672.64 × 13,472.90
  4. Step 4: Simplify right side
    20,448.22x = 413,249,411.46
  5. Step 5: Solve for x
    x = 413,249,411.46/20,448.22
  6. Step 6: Final answer
    x = 20,209.55

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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.