Home / 12,767.78-19,140.32-4,974.78

Finding the Fourth Proportional to 12,767.78, 19,140.32 and 4,974.78

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Solution

The fourth proportional to 12,767.78, 19,140.32 and 4,974.78 is: 7,457.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,767.78 : 19,140.32 = 4,974.78 : x
  2. Step 2: Convert to fraction form
    12,767.78/19,140.32 = 4,974.78/x
  3. Step 3: Cross multiply
    12,767.78x = 19,140.32 × 4,974.78
  4. Step 4: Simplify right side
    12,767.78x = 95,218,881.13
  5. Step 5: Solve for x
    x = 95,218,881.13/12,767.78
  6. Step 6: Final answer
    x = 7,457.75

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1.5x scale

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.