Home / 11,287.76-15,580.35-6,810.75

Finding the Fourth Proportional to 11,287.76, 15,580.35 and 6,810.75

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Solution

The fourth proportional to 11,287.76, 15,580.35 and 6,810.75 is: 9,400.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,287.76 : 15,580.35 = 6,810.75 : x
  2. Step 2: Convert to fraction form
    11,287.76/15,580.35 = 6,810.75/x
  3. Step 3: Cross multiply
    11,287.76x = 15,580.35 × 6,810.75
  4. Step 4: Simplify right side
    11,287.76x = 106,113,868.76
  5. Step 5: Solve for x
    x = 106,113,868.76/11,287.76
  6. Step 6: Final answer
    x = 9,400.79

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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.