Home / 14,456.16-21,679.92-5,220

Finding the Fourth Proportional to 14,456.16, 21,679.92 and 5,220

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Solution

The fourth proportional to 14,456.16, 21,679.92 and 5,220 is: 7,828.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,456.16 : 21,679.92 = 5,220 : x
  2. Step 2: Convert to fraction form
    14,456.16/21,679.92 = 5,220/x
  3. Step 3: Cross multiply
    14,456.16x = 21,679.92 × 5,220
  4. Step 4: Simplify right side
    14,456.16x = 113,169,182.40
  5. Step 5: Solve for x
    x = 113,169,182.40/14,456.16
  6. Step 6: Final answer
    x = 7,828.44

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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.