Home / 20,209.60-30,313.72-5,417.72

Finding the Fourth Proportional to 20,209.60, 30,313.72 and 5,417.72

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Solution

The fourth proportional to 20,209.60, 30,313.72 and 5,417.72 is: 8,126.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.60 : 30,313.72 = 5,417.72 : x
  2. Step 2: Convert to fraction form
    20,209.60/30,313.72 = 5,417.72/x
  3. Step 3: Cross multiply
    20,209.60x = 30,313.72 × 5,417.72
  4. Step 4: Simplify right side
    20,209.60x = 164,231,247.12
  5. Step 5: Solve for x
    x = 164,231,247.12/20,209.60
  6. Step 6: Final answer
    x = 8,126.40

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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.