Home / 13,385.61-20,078.73-4,501.05

Finding the Fourth Proportional to 13,385.61, 20,078.73 and 4,501.05

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Solution

The fourth proportional to 13,385.61, 20,078.73 and 4,501.05 is: 6,751.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.61 : 20,078.73 = 4,501.05 : x
  2. Step 2: Convert to fraction form
    13,385.61/20,078.73 = 4,501.05/x
  3. Step 3: Cross multiply
    13,385.61x = 20,078.73 × 4,501.05
  4. Step 4: Simplify right side
    13,385.61x = 90,375,367.67
  5. Step 5: Solve for x
    x = 90,375,367.67/13,385.61
  6. Step 6: Final answer
    x = 6,751.68

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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.