Home / 13,943.16-19,213.20-12,958.92

Finding the Fourth Proportional to 13,943.16, 19,213.20 and 12,958.92

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Solution

The fourth proportional to 13,943.16, 19,213.20 and 12,958.92 is: 17,856.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943.16 : 19,213.20 = 12,958.92 : x
  2. Step 2: Convert to fraction form
    13,943.16/19,213.20 = 12,958.92/x
  3. Step 3: Cross multiply
    13,943.16x = 19,213.20 × 12,958.92
  4. Step 4: Simplify right side
    13,943.16x = 248,982,321.74
  5. Step 5: Solve for x
    x = 248,982,321.74/13,943.16
  6. Step 6: Final answer
    x = 17,856.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.