Home / 11,856.97-17,768.40-8,712.28

Finding the Fourth Proportional to 11,856.97, 17,768.40 and 8,712.28

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Solution

The fourth proportional to 11,856.97, 17,768.40 and 8,712.28 is: 13,055.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,856.97 : 17,768.40 = 8,712.28 : x
  2. Step 2: Convert to fraction form
    11,856.97/17,768.40 = 8,712.28/x
  3. Step 3: Cross multiply
    11,856.97x = 17,768.40 × 8,712.28
  4. Step 4: Simplify right side
    11,856.97x = 154,803,275.95
  5. Step 5: Solve for x
    x = 154,803,275.95/11,856.97
  6. Step 6: Final answer
    x = 13,055.89

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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.