Home / 11,315.70-15,623.28-8,658.36

Finding the Fourth Proportional to 11,315.70, 15,623.28 and 8,658.36

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Solution

The fourth proportional to 11,315.70, 15,623.28 and 8,658.36 is: 11,954.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.70 : 15,623.28 = 8,658.36 : x
  2. Step 2: Convert to fraction form
    11,315.70/15,623.28 = 8,658.36/x
  3. Step 3: Cross multiply
    11,315.70x = 15,623.28 × 8,658.36
  4. Step 4: Simplify right side
    11,315.70x = 135,271,982.62
  5. Step 5: Solve for x
    x = 135,271,982.62/11,315.70
  6. Step 6: Final answer
    x = 11,954.36

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Double scale
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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.