Home / 37,805.81-52,172.20-20,811.76

Finding the Fourth Proportional to 37,805.81, 52,172.20 and 20,811.76

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Solution

The fourth proportional to 37,805.81, 52,172.20 and 20,811.76 is: 28,720.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,805.81 : 52,172.20 = 20,811.76 : x
  2. Step 2: Convert to fraction form
    37,805.81/52,172.20 = 20,811.76/x
  3. Step 3: Cross multiply
    37,805.81x = 52,172.20 × 20,811.76
  4. Step 4: Simplify right side
    37,805.81x = 1,085,795,253.04
  5. Step 5: Solve for x
    x = 1,085,795,253.04/37,805.81
  6. Step 6: Final answer
    x = 28,720.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.