Home / 13,582.15-20,370.78-3,720.59

Finding the Fourth Proportional to 13,582.15, 20,370.78 and 3,720.59

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Solution

The fourth proportional to 13,582.15, 20,370.78 and 3,720.59 is: 5,580.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,582.15 : 20,370.78 = 3,720.59 : x
  2. Step 2: Convert to fraction form
    13,582.15/20,370.78 = 3,720.59/x
  3. Step 3: Cross multiply
    13,582.15x = 20,370.78 × 3,720.59
  4. Step 4: Simplify right side
    13,582.15x = 75,791,320.36
  5. Step 5: Solve for x
    x = 75,791,320.36/13,582.15
  6. Step 6: Final answer
    x = 5,580.22

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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.