Home / 15,868.22-21,853.74-15,523.84

Finding the Fourth Proportional to 15,868.22, 21,853.74 and 15,523.84

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Solution

The fourth proportional to 15,868.22, 21,853.74 and 15,523.84 is: 21,379.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,868.22 : 21,853.74 = 15,523.84 : x
  2. Step 2: Convert to fraction form
    15,868.22/21,853.74 = 15,523.84/x
  3. Step 3: Cross multiply
    15,868.22x = 21,853.74 × 15,523.84
  4. Step 4: Simplify right side
    15,868.22x = 339,253,963.16
  5. Step 5: Solve for x
    x = 339,253,963.16/15,868.22
  6. Step 6: Final answer
    x = 21,379.46

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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.