Home / 15,087.72-22,615.14-12,889.80

Finding the Fourth Proportional to 15,087.72, 22,615.14 and 12,889.80

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Solution

The fourth proportional to 15,087.72, 22,615.14 and 12,889.80 is: 19,320.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,087.72 : 22,615.14 = 12,889.80 : x
  2. Step 2: Convert to fraction form
    15,087.72/22,615.14 = 12,889.80/x
  3. Step 3: Cross multiply
    15,087.72x = 22,615.14 × 12,889.80
  4. Step 4: Simplify right side
    15,087.72x = 291,504,631.57
  5. Step 5: Solve for x
    x = 291,504,631.57/15,087.72
  6. Step 6: Final answer
    x = 19,320.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.