Home / 9,992.40-13,787.92-5,742.63

Finding the Fourth Proportional to 9,992.40, 13,787.92 and 5,742.63

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Solution

The fourth proportional to 9,992.40, 13,787.92 and 5,742.63 is: 7,923.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992.40 : 13,787.92 = 5,742.63 : x
  2. Step 2: Convert to fraction form
    9,992.40/13,787.92 = 5,742.63/x
  3. Step 3: Cross multiply
    9,992.40x = 13,787.92 × 5,742.63
  4. Step 4: Simplify right side
    9,992.40x = 79,178,930.21
  5. Step 5: Solve for x
    x = 79,178,930.21/9,992.40
  6. Step 6: Final answer
    x = 7,923.92

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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.