Home / 11,278.64-15,566.38-7,738.94

Finding the Fourth Proportional to 11,278.64, 15,566.38 and 7,738.94

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Solution

The fourth proportional to 11,278.64, 15,566.38 and 7,738.94 is: 10,681.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.64 : 15,566.38 = 7,738.94 : x
  2. Step 2: Convert to fraction form
    11,278.64/15,566.38 = 7,738.94/x
  3. Step 3: Cross multiply
    11,278.64x = 15,566.38 × 7,738.94
  4. Step 4: Simplify right side
    11,278.64x = 120,467,280.84
  5. Step 5: Solve for x
    x = 120,467,280.84/11,278.64
  6. Step 6: Final answer
    x = 10,681.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.