Home / 21,828.20-30,099.07-14,742.32

Finding the Fourth Proportional to 21,828.20, 30,099.07 and 14,742.32

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Solution

The fourth proportional to 21,828.20, 30,099.07 and 14,742.32 is: 20,328.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,828.20 : 30,099.07 = 14,742.32 : x
  2. Step 2: Convert to fraction form
    21,828.20/30,099.07 = 14,742.32/x
  3. Step 3: Cross multiply
    21,828.20x = 30,099.07 × 14,742.32
  4. Step 4: Simplify right side
    21,828.20x = 443,729,934.29
  5. Step 5: Solve for x
    x = 443,729,934.29/21,828.20
  6. Step 6: Final answer
    x = 20,328.29

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.