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Finding the Fourth Proportional to 14,482.80, 19,987.04 and 8,816.65

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Solution

The fourth proportional to 14,482.80, 19,987.04 and 8,816.65 is: 12,167.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,482.80 : 19,987.04 = 8,816.65 : x
  2. Step 2: Convert to fraction form
    14,482.80/19,987.04 = 8,816.65/x
  3. Step 3: Cross multiply
    14,482.80x = 19,987.04 × 8,816.65
  4. Step 4: Simplify right side
    14,482.80x = 176,218,708.29
  5. Step 5: Solve for x
    x = 176,218,708.29/14,482.80
  6. Step 6: Final answer
    x = 12,167.45

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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.