Home / 13,746.20-20,620.44-4,387.58

Finding the Fourth Proportional to 13,746.20, 20,620.44 and 4,387.58

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Solution

The fourth proportional to 13,746.20, 20,620.44 and 4,387.58 is: 6,581.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.20 : 20,620.44 = 4,387.58 : x
  2. Step 2: Convert to fraction form
    13,746.20/20,620.44 = 4,387.58/x
  3. Step 3: Cross multiply
    13,746.20x = 20,620.44 × 4,387.58
  4. Step 4: Simplify right side
    13,746.20x = 90,473,830.14
  5. Step 5: Solve for x
    x = 90,473,830.14/13,746.20
  6. Step 6: Final answer
    x = 6,581.73

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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.