Home / 19,470.80-29,205.92-13,215.28

Finding the Fourth Proportional to 19,470.80, 29,205.92 and 13,215.28

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Solution

The fourth proportional to 19,470.80, 29,205.92 and 13,215.28 is: 19,822.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,470.80 : 29,205.92 = 13,215.28 : x
  2. Step 2: Convert to fraction form
    19,470.80/29,205.92 = 13,215.28/x
  3. Step 3: Cross multiply
    19,470.80x = 29,205.92 × 13,215.28
  4. Step 4: Simplify right side
    19,470.80x = 385,964,410.46
  5. Step 5: Solve for x
    x = 385,964,410.46/19,470.80
  6. Step 6: Final answer
    x = 19,822.73

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1.5x scale

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.