Home / 15,021.43-20,729.71-8,307.51

Finding the Fourth Proportional to 15,021.43, 20,729.71 and 8,307.51

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Solution

The fourth proportional to 15,021.43, 20,729.71 and 8,307.51 is: 11,464.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,021.43 : 20,729.71 = 8,307.51 : x
  2. Step 2: Convert to fraction form
    15,021.43/20,729.71 = 8,307.51/x
  3. Step 3: Cross multiply
    15,021.43x = 20,729.71 × 8,307.51
  4. Step 4: Simplify right side
    15,021.43x = 172,212,273.12
  5. Step 5: Solve for x
    x = 172,212,273.12/15,021.43
  6. Step 6: Final answer
    x = 11,464.44

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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.