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Finding the Fourth Proportional to 14,482.71, 19,987.82 and 8,820.78

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Solution

The fourth proportional to 14,482.71, 19,987.82 and 8,820.78 is: 12,173.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,482.71 : 19,987.82 = 8,820.78 : x
  2. Step 2: Convert to fraction form
    14,482.71/19,987.82 = 8,820.78/x
  3. Step 3: Cross multiply
    14,482.71x = 19,987.82 × 8,820.78
  4. Step 4: Simplify right side
    14,482.71x = 176,308,134.98
  5. Step 5: Solve for x
    x = 176,308,134.98/14,482.71
  6. Step 6: Final answer
    x = 12,173.70

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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.