Home / 13,538.60-20,308.70-5,217.46

Finding the Fourth Proportional to 13,538.60, 20,308.70 and 5,217.46

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Solution

The fourth proportional to 13,538.60, 20,308.70 and 5,217.46 is: 7,826.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.60 : 20,308.70 = 5,217.46 : x
  2. Step 2: Convert to fraction form
    13,538.60/20,308.70 = 5,217.46/x
  3. Step 3: Cross multiply
    13,538.60x = 20,308.70 × 5,217.46
  4. Step 4: Simplify right side
    13,538.60x = 105,959,829.90
  5. Step 5: Solve for x
    x = 105,959,829.90/13,538.60
  6. Step 6: Final answer
    x = 7,826.50

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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.