Home / 12,767.16-19,117.89-7,821.81

Finding the Fourth Proportional to 12,767.16, 19,117.89 and 7,821.81

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Solution

The fourth proportional to 12,767.16, 19,117.89 and 7,821.81 is: 11,712.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,767.16 : 19,117.89 = 7,821.81 : x
  2. Step 2: Convert to fraction form
    12,767.16/19,117.89 = 7,821.81/x
  3. Step 3: Cross multiply
    12,767.16x = 19,117.89 × 7,821.81
  4. Step 4: Simplify right side
    12,767.16x = 149,536,503.18
  5. Step 5: Solve for x
    x = 149,536,503.18/12,767.16
  6. Step 6: Final answer
    x = 11,712.59

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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.