Home / 14,479.26-19,981.80-8,191.50

Finding the Fourth Proportional to 14,479.26, 19,981.80 and 8,191.50

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Solution

The fourth proportional to 14,479.26, 19,981.80 and 8,191.50 is: 11,304.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,479.26 : 19,981.80 = 8,191.50 : x
  2. Step 2: Convert to fraction form
    14,479.26/19,981.80 = 8,191.50/x
  3. Step 3: Cross multiply
    14,479.26x = 19,981.80 × 8,191.50
  4. Step 4: Simplify right side
    14,479.26x = 163,680,914.70
  5. Step 5: Solve for x
    x = 163,680,914.70/14,479.26
  6. Step 6: Final answer
    x = 11,304.51

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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.