Home / 19,420.75-29,140.85-8,890.75

Finding the Fourth Proportional to 19,420.75, 29,140.85 and 8,890.75

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Solution

The fourth proportional to 19,420.75, 29,140.85 and 8,890.75 is: 13,340.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,420.75 : 29,140.85 = 8,890.75 : x
  2. Step 2: Convert to fraction form
    19,420.75/29,140.85 = 8,890.75/x
  3. Step 3: Cross multiply
    19,420.75x = 29,140.85 × 8,890.75
  4. Step 4: Simplify right side
    19,420.75x = 259,084,012.14
  5. Step 5: Solve for x
    x = 259,084,012.14/19,420.75
  6. Step 6: Final answer
    x = 13,340.58

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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.