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Finding the Fourth Proportional to 13,802.97, 20,700.81 and 5,482.65

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Solution

The fourth proportional to 13,802.97, 20,700.81 and 5,482.65 is: 8,222.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,802.97 : 20,700.81 = 5,482.65 : x
  2. Step 2: Convert to fraction form
    13,802.97/20,700.81 = 5,482.65/x
  3. Step 3: Cross multiply
    13,802.97x = 20,700.81 × 5,482.65
  4. Step 4: Simplify right side
    13,802.97x = 113,495,295.95
  5. Step 5: Solve for x
    x = 113,495,295.95/13,802.97
  6. Step 6: Final answer
    x = 8,222.53

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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.