Home / 21,255.04-31,869.60-8,093.35

Finding the Fourth Proportional to 21,255.04, 31,869.60 and 8,093.35

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Solution

The fourth proportional to 21,255.04, 31,869.60 and 8,093.35 is: 12,135.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.04 : 31,869.60 = 8,093.35 : x
  2. Step 2: Convert to fraction form
    21,255.04/31,869.60 = 8,093.35/x
  3. Step 3: Cross multiply
    21,255.04x = 31,869.60 × 8,093.35
  4. Step 4: Simplify right side
    21,255.04x = 257,931,827.16
  5. Step 5: Solve for x
    x = 257,931,827.16/21,255.04
  6. Step 6: Final answer
    x = 12,135.09

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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.