Home / 13,472.35-20,209.75-6,455.72

Finding the Fourth Proportional to 13,472.35, 20,209.75 and 6,455.72

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Solution

The fourth proportional to 13,472.35, 20,209.75 and 6,455.72 is: 9,684.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,472.35 : 20,209.75 = 6,455.72 : x
  2. Step 2: Convert to fraction form
    13,472.35/20,209.75 = 6,455.72/x
  3. Step 3: Cross multiply
    13,472.35x = 20,209.75 × 6,455.72
  4. Step 4: Simplify right side
    13,472.35x = 130,468,521.66
  5. Step 5: Solve for x
    x = 130,468,521.66/13,472.35
  6. Step 6: Final answer
    x = 9,684.17

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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.