Home / 14,581.60-21,872.40-4,721.20

Finding the Fourth Proportional to 14,581.60, 21,872.40 and 4,721.20

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Solution

The fourth proportional to 14,581.60, 21,872.40 and 4,721.20 is: 7,081.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,581.60 : 21,872.40 = 4,721.20 : x
  2. Step 2: Convert to fraction form
    14,581.60/21,872.40 = 4,721.20/x
  3. Step 3: Cross multiply
    14,581.60x = 21,872.40 × 4,721.20
  4. Step 4: Simplify right side
    14,581.60x = 103,263,974.88
  5. Step 5: Solve for x
    x = 103,263,974.88/14,581.60
  6. Step 6: Final answer
    x = 7,081.80

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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.