Home / 21,193.29-31,800.87-8,722.53

Finding the Fourth Proportional to 21,193.29, 31,800.87 and 8,722.53

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Solution

The fourth proportional to 21,193.29, 31,800.87 and 8,722.53 is: 13,088.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.29 : 31,800.87 = 8,722.53 : x
  2. Step 2: Convert to fraction form
    21,193.29/31,800.87 = 8,722.53/x
  3. Step 3: Cross multiply
    21,193.29x = 31,800.87 × 8,722.53
  4. Step 4: Simplify right side
    21,193.29x = 277,384,042.60
  5. Step 5: Solve for x
    x = 277,384,042.60/21,193.29
  6. Step 6: Final answer
    x = 13,088.30

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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.