Home / 19,470.80-29,225.40-9,621.20

Finding the Fourth Proportional to 19,470.80, 29,225.40 and 9,621.20

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Solution

The fourth proportional to 19,470.80, 29,225.40 and 9,621.20 is: 14,441.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,470.80 : 29,225.40 = 9,621.20 : x
  2. Step 2: Convert to fraction form
    19,470.80/29,225.40 = 9,621.20/x
  3. Step 3: Cross multiply
    19,470.80x = 29,225.40 × 9,621.20
  4. Step 4: Simplify right side
    19,470.80x = 281,183,418.48
  5. Step 5: Solve for x
    x = 281,183,418.48/19,470.80
  6. Step 6: Final answer
    x = 14,441.29

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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.