Home / 13,632.47-20,448.68-3,771.72

Finding the Fourth Proportional to 13,632.47, 20,448.68 and 3,771.72

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Solution

The fourth proportional to 13,632.47, 20,448.68 and 3,771.72 is: 5,657.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,632.47 : 20,448.68 = 3,771.72 : x
  2. Step 2: Convert to fraction form
    13,632.47/20,448.68 = 3,771.72/x
  3. Step 3: Cross multiply
    13,632.47x = 20,448.68 × 3,771.72
  4. Step 4: Simplify right side
    13,632.47x = 77,126,701.46
  5. Step 5: Solve for x
    x = 77,126,701.46/13,632.47
  6. Step 6: Final answer
    x = 5,657.57

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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.