Home / 15,622.23-21,568.74-13,940.75

Finding the Fourth Proportional to 15,622.23, 21,568.74 and 13,940.75

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Solution

The fourth proportional to 15,622.23, 21,568.74 and 13,940.75 is: 19,247.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,622.23 : 21,568.74 = 13,940.75 : x
  2. Step 2: Convert to fraction form
    15,622.23/21,568.74 = 13,940.75/x
  3. Step 3: Cross multiply
    15,622.23x = 21,568.74 × 13,940.75
  4. Step 4: Simplify right side
    15,622.23x = 300,684,271.95
  5. Step 5: Solve for x
    x = 300,684,271.95/15,622.23
  6. Step 6: Final answer
    x = 19,247.21

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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.