Home / 15,021.34-20,729.97-8,308.06

Finding the Fourth Proportional to 15,021.34, 20,729.97 and 8,308.06

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Solution

The fourth proportional to 15,021.34, 20,729.97 and 8,308.06 is: 11,465.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,021.34 : 20,729.97 = 8,308.06 : x
  2. Step 2: Convert to fraction form
    15,021.34/20,729.97 = 8,308.06/x
  3. Step 3: Cross multiply
    15,021.34x = 20,729.97 × 8,308.06
  4. Step 4: Simplify right side
    15,021.34x = 172,225,834.56
  5. Step 5: Solve for x
    x = 172,225,834.56/15,021.34
  6. Step 6: Final answer
    x = 11,465.41

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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.