Home / 69,420.15-104,129.28-16,830.09

Finding the Fourth Proportional to 69,420.15, 104,129.28 and 16,830.09

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Solution

The fourth proportional to 69,420.15, 104,129.28 and 16,830.09 is: 25,244.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,420.15 : 104,129.28 = 16,830.09 : x
  2. Step 2: Convert to fraction form
    69,420.15/104,129.28 = 16,830.09/x
  3. Step 3: Cross multiply
    69,420.15x = 104,129.28 × 16,830.09
  4. Step 4: Simplify right side
    69,420.15x = 1,752,505,154.04
  5. Step 5: Solve for x
    x = 1,752,505,154.04/69,420.15
  6. Step 6: Final answer
    x = 25,244.91

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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.