Home / 15,122.39-22,663.87-7,720.61

Finding the Fourth Proportional to 15,122.39, 22,663.87 and 7,720.61

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Solution

The fourth proportional to 15,122.39, 22,663.87 and 7,720.61 is: 11,570.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.39 : 22,663.87 = 7,720.61 : x
  2. Step 2: Convert to fraction form
    15,122.39/22,663.87 = 7,720.61/x
  3. Step 3: Cross multiply
    15,122.39x = 22,663.87 × 7,720.61
  4. Step 4: Simplify right side
    15,122.39x = 174,978,768.74
  5. Step 5: Solve for x
    x = 174,978,768.74/15,122.39
  6. Step 6: Final answer
    x = 11,570.84

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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.