Home / 15,738.26-21,671.96-15,389.01

Finding the Fourth Proportional to 15,738.26, 21,671.96 and 15,389.01

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Solution

The fourth proportional to 15,738.26, 21,671.96 and 15,389.01 is: 21,191.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,738.26 : 21,671.96 = 15,389.01 : x
  2. Step 2: Convert to fraction form
    15,738.26/21,671.96 = 15,389.01/x
  3. Step 3: Cross multiply
    15,738.26x = 21,671.96 × 15,389.01
  4. Step 4: Simplify right side
    15,738.26x = 333,509,932.21
  5. Step 5: Solve for x
    x = 333,509,932.21/15,738.26
  6. Step 6: Final answer
    x = 21,191.04

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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.