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Finding the Fourth Proportional to 21,871.50, 32,813.13 and 8,733.11

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Solution

The fourth proportional to 21,871.50, 32,813.13 and 8,733.11 is: 13,102.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,871.50 : 32,813.13 = 8,733.11 : x
  2. Step 2: Convert to fraction form
    21,871.50/32,813.13 = 8,733.11/x
  3. Step 3: Cross multiply
    21,871.50x = 32,813.13 × 8,733.11
  4. Step 4: Simplify right side
    21,871.50x = 286,560,509.67
  5. Step 5: Solve for x
    x = 286,560,509.67/21,871.50
  6. Step 6: Final answer
    x = 13,102.01

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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.