Home / 15,023.07-20,729.53-8,648.43

Finding the Fourth Proportional to 15,023.07, 20,729.53 and 8,648.43

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Solution

The fourth proportional to 15,023.07, 20,729.53 and 8,648.43 is: 11,933.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,023.07 : 20,729.53 = 8,648.43 : x
  2. Step 2: Convert to fraction form
    15,023.07/20,729.53 = 8,648.43/x
  3. Step 3: Cross multiply
    15,023.07x = 20,729.53 × 8,648.43
  4. Step 4: Simplify right side
    15,023.07x = 179,277,742.25
  5. Step 5: Solve for x
    x = 179,277,742.25/15,023.07
  6. Step 6: Final answer
    x = 11,933.50

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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.