Home / 13,511.40-20,269.12-4,744.76

Finding the Fourth Proportional to 13,511.40, 20,269.12 and 4,744.76

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Solution

The fourth proportional to 13,511.40, 20,269.12 and 4,744.76 is: 7,117.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511.40 : 20,269.12 = 4,744.76 : x
  2. Step 2: Convert to fraction form
    13,511.40/20,269.12 = 4,744.76/x
  3. Step 3: Cross multiply
    13,511.40x = 20,269.12 × 4,744.76
  4. Step 4: Simplify right side
    13,511.40x = 96,172,109.81
  5. Step 5: Solve for x
    x = 96,172,109.81/13,511.40
  6. Step 6: Final answer
    x = 7,117.85

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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.