Home / 20,477.80-30,716.68-5,686.71

Finding the Fourth Proportional to 20,477.80, 30,716.68 and 5,686.71

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Solution

The fourth proportional to 20,477.80, 30,716.68 and 5,686.71 is: 8,530.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,477.80 : 30,716.68 = 5,686.71 : x
  2. Step 2: Convert to fraction form
    20,477.80/30,716.68 = 5,686.71/x
  3. Step 3: Cross multiply
    20,477.80x = 30,716.68 × 5,686.71
  4. Step 4: Simplify right side
    20,477.80x = 174,676,851.32
  5. Step 5: Solve for x
    x = 174,676,851.32/20,477.80
  6. Step 6: Final answer
    x = 8,530.06

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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.