Home / 27,130.87-40,690.81-7,407.78

Finding the Fourth Proportional to 27,130.87, 40,690.81 and 7,407.78

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Solution

The fourth proportional to 27,130.87, 40,690.81 and 7,407.78 is: 11,110.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,130.87 : 40,690.81 = 7,407.78 : x
  2. Step 2: Convert to fraction form
    27,130.87/40,690.81 = 7,407.78/x
  3. Step 3: Cross multiply
    27,130.87x = 40,690.81 × 7,407.78
  4. Step 4: Simplify right side
    27,130.87x = 301,428,568.50
  5. Step 5: Solve for x
    x = 301,428,568.50/27,130.87
  6. Step 6: Final answer
    x = 11,110.17

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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.