Home / 22,391.90-30,868.09-15,656.57

Finding the Fourth Proportional to 22,391.90, 30,868.09 and 15,656.57

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Solution

The fourth proportional to 22,391.90, 30,868.09 and 15,656.57 is: 21,583.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,391.90 : 30,868.09 = 15,656.57 : x
  2. Step 2: Convert to fraction form
    22,391.90/30,868.09 = 15,656.57/x
  3. Step 3: Cross multiply
    22,391.90x = 30,868.09 × 15,656.57
  4. Step 4: Simplify right side
    22,391.90x = 483,288,218.37
  5. Step 5: Solve for x
    x = 483,288,218.37/22,391.90
  6. Step 6: Final answer
    x = 21,583.18

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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.