Home / 11,278.40-15,563.80-6,242.60

Finding the Fourth Proportional to 11,278.40, 15,563.80 and 6,242.60

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Solution

The fourth proportional to 11,278.40, 15,563.80 and 6,242.60 is: 8,614.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.40 : 15,563.80 = 6,242.60 : x
  2. Step 2: Convert to fraction form
    11,278.40/15,563.80 = 6,242.60/x
  3. Step 3: Cross multiply
    11,278.40x = 15,563.80 × 6,242.60
  4. Step 4: Simplify right side
    11,278.40x = 97,158,577.88
  5. Step 5: Solve for x
    x = 97,158,577.88/11,278.40
  6. Step 6: Final answer
    x = 8,614.57

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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.