Home / 15,571.60-21,488.72-8,857.25

Finding the Fourth Proportional to 15,571.60, 21,488.72 and 8,857.25

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Solution

The fourth proportional to 15,571.60, 21,488.72 and 8,857.25 is: 12,222.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,571.60 : 21,488.72 = 8,857.25 : x
  2. Step 2: Convert to fraction form
    15,571.60/21,488.72 = 8,857.25/x
  3. Step 3: Cross multiply
    15,571.60x = 21,488.72 × 8,857.25
  4. Step 4: Simplify right side
    15,571.60x = 190,330,918.98
  5. Step 5: Solve for x
    x = 190,330,918.98/15,571.60
  6. Step 6: Final answer
    x = 12,222.95

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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.