Home / 20,555.52-30,833.36-7,408.92

Finding the Fourth Proportional to 20,555.52, 30,833.36 and 7,408.92

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Solution

The fourth proportional to 20,555.52, 30,833.36 and 7,408.92 is: 11,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,555.52 : 30,833.36 = 7,408.92 : x
  2. Step 2: Convert to fraction form
    20,555.52/30,833.36 = 7,408.92/x
  3. Step 3: Cross multiply
    20,555.52x = 30,833.36 × 7,408.92
  4. Step 4: Simplify right side
    20,555.52x = 228,441,830.50
  5. Step 5: Solve for x
    x = 228,441,830.50/20,555.52
  6. Step 6: Final answer
    x = 11,113.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.