Home / 15,571.05-21,488.52-8,857.64

Finding the Fourth Proportional to 15,571.05, 21,488.52 and 8,857.64

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Solution

The fourth proportional to 15,571.05, 21,488.52 and 8,857.64 is: 12,223.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,571.05 : 21,488.52 = 8,857.64 : x
  2. Step 2: Convert to fraction form
    15,571.05/21,488.52 = 8,857.64/x
  3. Step 3: Cross multiply
    15,571.05x = 21,488.52 × 8,857.64
  4. Step 4: Simplify right side
    15,571.05x = 190,337,574.29
  5. Step 5: Solve for x
    x = 190,337,574.29/15,571.05
  6. Step 6: Final answer
    x = 12,223.81

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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.