Home / 26,530.21-39,781.62-7,807.81

Finding the Fourth Proportional to 26,530.21, 39,781.62 and 7,807.81

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Solution

The fourth proportional to 26,530.21, 39,781.62 and 7,807.81 is: 11,707.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,530.21 : 39,781.62 = 7,807.81 : x
  2. Step 2: Convert to fraction form
    26,530.21/39,781.62 = 7,807.81/x
  3. Step 3: Cross multiply
    26,530.21x = 39,781.62 × 7,807.81
  4. Step 4: Simplify right side
    26,530.21x = 310,607,291.41
  5. Step 5: Solve for x
    x = 310,607,291.41/26,530.21
  6. Step 6: Final answer
    x = 11,707.69

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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.