Home / 15,591.39-21,515.00-8,516.31

Finding the Fourth Proportional to 15,591.39, 21,515.00 and 8,516.31

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Solution

The fourth proportional to 15,591.39, 21,515.00 and 8,516.31 is: 11,751.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,591.39 : 21,515.00 = 8,516.31 : x
  2. Step 2: Convert to fraction form
    15,591.39/21,515.00 = 8,516.31/x
  3. Step 3: Cross multiply
    15,591.39x = 21,515.00 × 8,516.31
  4. Step 4: Simplify right side
    15,591.39x = 183,228,367.07
  5. Step 5: Solve for x
    x = 183,228,367.07/15,591.39
  6. Step 6: Final answer
    x = 11,751.89

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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.