Home / 15,185.89-22,781.91-6,420.79

Finding the Fourth Proportional to 15,185.89, 22,781.91 and 6,420.79

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Solution

The fourth proportional to 15,185.89, 22,781.91 and 6,420.79 is: 9,632.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,185.89 : 22,781.91 = 6,420.79 : x
  2. Step 2: Convert to fraction form
    15,185.89/22,781.91 = 6,420.79/x
  3. Step 3: Cross multiply
    15,185.89x = 22,781.91 × 6,420.79
  4. Step 4: Simplify right side
    15,185.89x = 146,277,859.91
  5. Step 5: Solve for x
    x = 146,277,859.91/15,185.89
  6. Step 6: Final answer
    x = 9,632.49

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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.