Home / 20,098.79-30,119.32-11,315.15

Finding the Fourth Proportional to 20,098.79, 30,119.32 and 11,315.15

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Solution

The fourth proportional to 20,098.79, 30,119.32 and 11,315.15 is: 16,956.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,098.79 : 30,119.32 = 11,315.15 : x
  2. Step 2: Convert to fraction form
    20,098.79/30,119.32 = 11,315.15/x
  3. Step 3: Cross multiply
    20,098.79x = 30,119.32 × 11,315.15
  4. Step 4: Simplify right side
    20,098.79x = 340,804,623.70
  5. Step 5: Solve for x
    x = 340,804,623.70/20,098.79
  6. Step 6: Final answer
    x = 16,956.47

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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.