Home / 13,490.55-20,235.83-4,720.68

Finding the Fourth Proportional to 13,490.55, 20,235.83 and 4,720.68

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Solution

The fourth proportional to 13,490.55, 20,235.83 and 4,720.68 is: 7,081.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.55 : 20,235.83 = 4,720.68 : x
  2. Step 2: Convert to fraction form
    13,490.55/20,235.83 = 4,720.68/x
  3. Step 3: Cross multiply
    13,490.55x = 20,235.83 × 4,720.68
  4. Step 4: Simplify right side
    13,490.55x = 95,526,854.36
  5. Step 5: Solve for x
    x = 95,526,854.36/13,490.55
  6. Step 6: Final answer
    x = 7,081.02

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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.