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Finding the Fourth Proportional to 15,761.01, 21,749.91 and 8,591.00

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Solution

The fourth proportional to 15,761.01, 21,749.91 and 8,591.00 is: 11,855.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,761.01 : 21,749.91 = 8,591.00 : x
  2. Step 2: Convert to fraction form
    15,761.01/21,749.91 = 8,591.00/x
  3. Step 3: Cross multiply
    15,761.01x = 21,749.91 × 8,591.00
  4. Step 4: Simplify right side
    15,761.01x = 186,853,368.06
  5. Step 5: Solve for x
    x = 186,853,368.06/15,761.01
  6. Step 6: Final answer
    x = 11,855.42

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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.