Home / 19,772.16-27,278.88-13,407.36

Finding the Fourth Proportional to 19,772.16, 27,278.88 and 13,407.36

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Solution

The fourth proportional to 19,772.16, 27,278.88 and 13,407.36 is: 18,497.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,772.16 : 27,278.88 = 13,407.36 : x
  2. Step 2: Convert to fraction form
    19,772.16/27,278.88 = 13,407.36/x
  3. Step 3: Cross multiply
    19,772.16x = 27,278.88 × 13,407.36
  4. Step 4: Simplify right side
    19,772.16x = 365,737,764.56
  5. Step 5: Solve for x
    x = 365,737,764.56/19,772.16
  6. Step 6: Final answer
    x = 18,497.61

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1.5x scale

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.