Home / 12,981.72-19,472.58-4,217.52

Finding the Fourth Proportional to 12,981.72, 19,472.58 and 4,217.52

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Solution

The fourth proportional to 12,981.72, 19,472.58 and 4,217.52 is: 6,326.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981.72 : 19,472.58 = 4,217.52 : x
  2. Step 2: Convert to fraction form
    12,981.72/19,472.58 = 4,217.52/x
  3. Step 3: Cross multiply
    12,981.72x = 19,472.58 × 4,217.52
  4. Step 4: Simplify right side
    12,981.72x = 82,125,995.60
  5. Step 5: Solve for x
    x = 82,125,995.60/12,981.72
  6. Step 6: Final answer
    x = 6,326.28

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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.