Home / 18,864.36-28,272.12-7,758.48

Finding the Fourth Proportional to 18,864.36, 28,272.12 and 7,758.48

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Solution

The fourth proportional to 18,864.36, 28,272.12 and 7,758.48 is: 11,627.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,864.36 : 28,272.12 = 7,758.48 : x
  2. Step 2: Convert to fraction form
    18,864.36/28,272.12 = 7,758.48/x
  3. Step 3: Cross multiply
    18,864.36x = 28,272.12 × 7,758.48
  4. Step 4: Simplify right side
    18,864.36x = 219,348,677.58
  5. Step 5: Solve for x
    x = 219,348,677.58/18,864.36
  6. Step 6: Final answer
    x = 11,627.68

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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.