Home / 10,712.16-16,040.55-7,390.65

Finding the Fourth Proportional to 10,712.16, 16,040.55 and 7,390.65

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Solution

The fourth proportional to 10,712.16, 16,040.55 and 7,390.65 is: 11,066.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,712.16 : 16,040.55 = 7,390.65 : x
  2. Step 2: Convert to fraction form
    10,712.16/16,040.55 = 7,390.65/x
  3. Step 3: Cross multiply
    10,712.16x = 16,040.55 × 7,390.65
  4. Step 4: Simplify right side
    10,712.16x = 118,550,090.86
  5. Step 5: Solve for x
    x = 118,550,090.86/10,712.16
  6. Step 6: Final answer
    x = 11,066.87

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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.