Home / 12,691.32-19,041.48-5,670.68

Finding the Fourth Proportional to 12,691.32, 19,041.48 and 5,670.68

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Solution

The fourth proportional to 12,691.32, 19,041.48 and 5,670.68 is: 8,508.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.32 : 19,041.48 = 5,670.68 : x
  2. Step 2: Convert to fraction form
    12,691.32/19,041.48 = 5,670.68/x
  3. Step 3: Cross multiply
    12,691.32x = 19,041.48 × 5,670.68
  4. Step 4: Simplify right side
    12,691.32x = 107,978,139.81
  5. Step 5: Solve for x
    x = 107,978,139.81/12,691.32
  6. Step 6: Final answer
    x = 8,508.03

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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.