Home / 15,571.12-21,488.74-8,857.37

Finding the Fourth Proportional to 15,571.12, 21,488.74 and 8,857.37

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Solution

The fourth proportional to 15,571.12, 21,488.74 and 8,857.37 is: 12,223.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,571.12 : 21,488.74 = 8,857.37 : x
  2. Step 2: Convert to fraction form
    15,571.12/21,488.74 = 8,857.37/x
  3. Step 3: Cross multiply
    15,571.12x = 21,488.74 × 8,857.37
  4. Step 4: Simplify right side
    15,571.12x = 190,333,721.01
  5. Step 5: Solve for x
    x = 190,333,721.01/15,571.12
  6. Step 6: Final answer
    x = 12,223.51

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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.