Home / 15,573.42-21,488.22-8,857.44

Finding the Fourth Proportional to 15,573.42, 21,488.22 and 8,857.44

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Solution

The fourth proportional to 15,573.42, 21,488.22 and 8,857.44 is: 12,221.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,573.42 : 21,488.22 = 8,857.44 : x
  2. Step 2: Convert to fraction form
    15,573.42/21,488.22 = 8,857.44/x
  3. Step 3: Cross multiply
    15,573.42x = 21,488.22 × 8,857.44
  4. Step 4: Simplify right side
    15,573.42x = 190,330,619.36
  5. Step 5: Solve for x
    x = 190,330,619.36/15,573.42
  6. Step 6: Final answer
    x = 12,221.50

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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.