Home / 55,278.68-82,918-20,199.20

Finding the Fourth Proportional to 55,278.68, 82,918 and 20,199.20

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Solution

The fourth proportional to 55,278.68, 82,918 and 20,199.20 is: 30,298.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,278.68 : 82,918 = 20,199.20 : x
  2. Step 2: Convert to fraction form
    55,278.68/82,918 = 20,199.20/x
  3. Step 3: Cross multiply
    55,278.68x = 82,918 × 20,199.20
  4. Step 4: Simplify right side
    55,278.68x = 1,674,877,265.60
  5. Step 5: Solve for x
    x = 1,674,877,265.60/55,278.68
  6. Step 6: Final answer
    x = 30,298.79

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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.