Home / 15,232.80-21,021.12-8,518.35

Finding the Fourth Proportional to 15,232.80, 21,021.12 and 8,518.35

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Solution

The fourth proportional to 15,232.80, 21,021.12 and 8,518.35 is: 11,755.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,232.80 : 21,021.12 = 8,518.35 : x
  2. Step 2: Convert to fraction form
    15,232.80/21,021.12 = 8,518.35/x
  3. Step 3: Cross multiply
    15,232.80x = 21,021.12 × 8,518.35
  4. Step 4: Simplify right side
    15,232.80x = 179,065,257.55
  5. Step 5: Solve for x
    x = 179,065,257.55/15,232.80
  6. Step 6: Final answer
    x = 11,755.24

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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.