Home / 15,718.45-23,572.67-5,186.51

Finding the Fourth Proportional to 15,718.45, 23,572.67 and 5,186.51

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Solution

The fourth proportional to 15,718.45, 23,572.67 and 5,186.51 is: 7,778.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,718.45 : 23,572.67 = 5,186.51 : x
  2. Step 2: Convert to fraction form
    15,718.45/23,572.67 = 5,186.51/x
  3. Step 3: Cross multiply
    15,718.45x = 23,572.67 × 5,186.51
  4. Step 4: Simplify right side
    15,718.45x = 122,259,744.89
  5. Step 5: Solve for x
    x = 122,259,744.89/15,718.45
  6. Step 6: Final answer
    x = 7,778.11

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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.