Home / 20,308.18-28,028.46-12,352.90

Finding the Fourth Proportional to 20,308.18, 28,028.46 and 12,352.90

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Solution

The fourth proportional to 20,308.18, 28,028.46 and 12,352.90 is: 17,048.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.18 : 28,028.46 = 12,352.90 : x
  2. Step 2: Convert to fraction form
    20,308.18/28,028.46 = 12,352.90/x
  3. Step 3: Cross multiply
    20,308.18x = 28,028.46 × 12,352.90
  4. Step 4: Simplify right side
    20,308.18x = 346,232,763.53
  5. Step 5: Solve for x
    x = 346,232,763.53/20,308.18
  6. Step 6: Final answer
    x = 17,048.93

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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.