Home / 21,152.19-29,176.78-13,608.34

Finding the Fourth Proportional to 21,152.19, 29,176.78 and 13,608.34

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Solution

The fourth proportional to 21,152.19, 29,176.78 and 13,608.34 is: 18,770.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,152.19 : 29,176.78 = 13,608.34 : x
  2. Step 2: Convert to fraction form
    21,152.19/29,176.78 = 13,608.34/x
  3. Step 3: Cross multiply
    21,152.19x = 29,176.78 × 13,608.34
  4. Step 4: Simplify right side
    21,152.19x = 397,047,542.35
  5. Step 5: Solve for x
    x = 397,047,542.35/21,152.19
  6. Step 6: Final answer
    x = 18,770.99

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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.