Home / 11,408.72-15,754.80-10,787.47

Finding the Fourth Proportional to 11,408.72, 15,754.80 and 10,787.47

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Solution

The fourth proportional to 11,408.72, 15,754.80 and 10,787.47 is: 14,896.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,408.72 : 15,754.80 = 10,787.47 : x
  2. Step 2: Convert to fraction form
    11,408.72/15,754.80 = 10,787.47/x
  3. Step 3: Cross multiply
    11,408.72x = 15,754.80 × 10,787.47
  4. Step 4: Simplify right side
    11,408.72x = 169,954,392.97
  5. Step 5: Solve for x
    x = 169,954,392.97/11,408.72
  6. Step 6: Final answer
    x = 14,896.89

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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.