Home / 12,911.79-19,400.13-8,233.95

Finding the Fourth Proportional to 12,911.79, 19,400.13 and 8,233.95

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Solution

The fourth proportional to 12,911.79, 19,400.13 and 8,233.95 is: 12,371.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.79 : 19,400.13 = 8,233.95 : x
  2. Step 2: Convert to fraction form
    12,911.79/19,400.13 = 8,233.95/x
  3. Step 3: Cross multiply
    12,911.79x = 19,400.13 × 8,233.95
  4. Step 4: Simplify right side
    12,911.79x = 159,739,700.41
  5. Step 5: Solve for x
    x = 159,739,700.41/12,911.79
  6. Step 6: Final answer
    x = 12,371.62

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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.