Home / 13,579.74-20,370.38-4,221.10

Finding the Fourth Proportional to 13,579.74, 20,370.38 and 4,221.10

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Solution

The fourth proportional to 13,579.74, 20,370.38 and 4,221.10 is: 6,331.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.74 : 20,370.38 = 4,221.10 : x
  2. Step 2: Convert to fraction form
    13,579.74/20,370.38 = 4,221.10/x
  3. Step 3: Cross multiply
    13,579.74x = 20,370.38 × 4,221.10
  4. Step 4: Simplify right side
    13,579.74x = 85,985,411.02
  5. Step 5: Solve for x
    x = 85,985,411.02/13,579.74
  6. Step 6: Final answer
    x = 6,331.89

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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.