Home / 15,571.35-21,488.94-8,857.95

Finding the Fourth Proportional to 15,571.35, 21,488.94 and 8,857.95

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Solution

The fourth proportional to 15,571.35, 21,488.94 and 8,857.95 is: 12,224.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,571.35 : 21,488.94 = 8,857.95 : x
  2. Step 2: Convert to fraction form
    15,571.35/21,488.94 = 8,857.95/x
  3. Step 3: Cross multiply
    15,571.35x = 21,488.94 × 8,857.95
  4. Step 4: Simplify right side
    15,571.35x = 190,347,956.07
  5. Step 5: Solve for x
    x = 190,347,956.07/15,571.35
  6. Step 6: Final answer
    x = 12,224.24

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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.