Home / 11,278.95-15,564.72-6,242.86

Finding the Fourth Proportional to 11,278.95, 15,564.72 and 6,242.86

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Solution

The fourth proportional to 11,278.95, 15,564.72 and 6,242.86 is: 8,615.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.95 : 15,564.72 = 6,242.86 : x
  2. Step 2: Convert to fraction form
    11,278.95/15,564.72 = 6,242.86/x
  3. Step 3: Cross multiply
    11,278.95x = 15,564.72 × 6,242.86
  4. Step 4: Simplify right side
    11,278.95x = 97,168,367.90
  5. Step 5: Solve for x
    x = 97,168,367.90/11,278.95
  6. Step 6: Final answer
    x = 8,615.02

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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.