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Finding the Fourth Proportional to 14,987.04, 20,682 and 8,700

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Solution

The fourth proportional to 14,987.04, 20,682 and 8,700 is: 12,005.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,987.04 : 20,682 = 8,700 : x
  2. Step 2: Convert to fraction form
    14,987.04/20,682 = 8,700/x
  3. Step 3: Cross multiply
    14,987.04x = 20,682 × 8,700
  4. Step 4: Simplify right side
    14,987.04x = 179,933,400
  5. Step 5: Solve for x
    x = 179,933,400/14,987.04
  6. Step 6: Final answer
    x = 12,005.93

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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.