Home / 11,276.72-15,561.87-6,561

Finding the Fourth Proportional to 11,276.72, 15,561.87 and 6,561

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Solution

The fourth proportional to 11,276.72, 15,561.87 and 6,561 is: 9,054.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,276.72 : 15,561.87 = 6,561 : x
  2. Step 2: Convert to fraction form
    11,276.72/15,561.87 = 6,561/x
  3. Step 3: Cross multiply
    11,276.72x = 15,561.87 × 6,561
  4. Step 4: Simplify right side
    11,276.72x = 102,101,441.37
  5. Step 5: Solve for x
    x = 102,101,441.37/11,276.72
  6. Step 6: Final answer
    x = 9,054.18

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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.