Home / 10,968.30-15,126.70-7,775.28

Finding the Fourth Proportional to 10,968.30, 15,126.70 and 7,775.28

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Solution

The fourth proportional to 10,968.30, 15,126.70 and 7,775.28 is: 10,723.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,968.30 : 15,126.70 = 7,775.28 : x
  2. Step 2: Convert to fraction form
    10,968.30/15,126.70 = 7,775.28/x
  3. Step 3: Cross multiply
    10,968.30x = 15,126.70 × 7,775.28
  4. Step 4: Simplify right side
    10,968.30x = 117,614,327.98
  5. Step 5: Solve for x
    x = 117,614,327.98/10,968.30
  6. Step 6: Final answer
    x = 10,723.11

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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.