Home / 20,390.11-30,585.15-5,599.09

Finding the Fourth Proportional to 20,390.11, 30,585.15 and 5,599.09

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Solution

The fourth proportional to 20,390.11, 30,585.15 and 5,599.09 is: 8,398.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390.11 : 30,585.15 = 5,599.09 : x
  2. Step 2: Convert to fraction form
    20,390.11/30,585.15 = 5,599.09/x
  3. Step 3: Cross multiply
    20,390.11x = 30,585.15 × 5,599.09
  4. Step 4: Simplify right side
    20,390.11x = 171,249,007.51
  5. Step 5: Solve for x
    x = 171,249,007.51/20,390.11
  6. Step 6: Final answer
    x = 8,398.63

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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.