Home / 19,780.56-27,297.92-11,397.04

Finding the Fourth Proportional to 19,780.56, 27,297.92 and 11,397.04

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Solution

The fourth proportional to 19,780.56, 27,297.92 and 11,397.04 is: 15,728.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,780.56 : 27,297.92 = 11,397.04 : x
  2. Step 2: Convert to fraction form
    19,780.56/27,297.92 = 11,397.04/x
  3. Step 3: Cross multiply
    19,780.56x = 27,297.92 × 11,397.04
  4. Step 4: Simplify right side
    19,780.56x = 311,115,486.16
  5. Step 5: Solve for x
    x = 311,115,486.16/19,780.56
  6. Step 6: Final answer
    x = 15,728.35

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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.