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Finding the Fourth Proportional to 21,991.59, 32,987.39 and 8,834.76

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Solution

The fourth proportional to 21,991.59, 32,987.39 and 8,834.76 is: 13,252.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,991.59 : 32,987.39 = 8,834.76 : x
  2. Step 2: Convert to fraction form
    21,991.59/32,987.39 = 8,834.76/x
  3. Step 3: Cross multiply
    21,991.59x = 32,987.39 × 8,834.76
  4. Step 4: Simplify right side
    21,991.59x = 291,435,629.50
  5. Step 5: Solve for x
    x = 291,435,629.50/21,991.59
  6. Step 6: Final answer
    x = 13,252.14

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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.