Home / 21,900.60-30,225.96-12,470.04

Finding the Fourth Proportional to 21,900.60, 30,225.96 and 12,470.04

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Solution

The fourth proportional to 21,900.60, 30,225.96 and 12,470.04 is: 17,210.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,900.60 : 30,225.96 = 12,470.04 : x
  2. Step 2: Convert to fraction form
    21,900.60/30,225.96 = 12,470.04/x
  3. Step 3: Cross multiply
    21,900.60x = 30,225.96 × 12,470.04
  4. Step 4: Simplify right side
    21,900.60x = 376,918,930.24
  5. Step 5: Solve for x
    x = 376,918,930.24/21,900.60
  6. Step 6: Final answer
    x = 17,210.44

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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.