Home / 21,216.18-31,823.28-8,733.09

Finding the Fourth Proportional to 21,216.18, 31,823.28 and 8,733.09

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Solution

The fourth proportional to 21,216.18, 31,823.28 and 8,733.09 is: 13,099.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,216.18 : 31,823.28 = 8,733.09 : x
  2. Step 2: Convert to fraction form
    21,216.18/31,823.28 = 8,733.09/x
  3. Step 3: Cross multiply
    21,216.18x = 31,823.28 × 8,733.09
  4. Step 4: Simplify right side
    21,216.18x = 277,915,568.34
  5. Step 5: Solve for x
    x = 277,915,568.34/21,216.18
  6. Step 6: Final answer
    x = 13,099.23

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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.