Home / 20,014.90-29,980.81-11,669.60

Finding the Fourth Proportional to 20,014.90, 29,980.81 and 11,669.60

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Solution

The fourth proportional to 20,014.90, 29,980.81 and 11,669.60 is: 17,480.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,014.90 : 29,980.81 = 11,669.60 : x
  2. Step 2: Convert to fraction form
    20,014.90/29,980.81 = 11,669.60/x
  3. Step 3: Cross multiply
    20,014.90x = 29,980.81 × 11,669.60
  4. Step 4: Simplify right side
    20,014.90x = 349,864,149.92
  5. Step 5: Solve for x
    x = 349,864,149.92/20,014.90
  6. Step 6: Final answer
    x = 17,480.19

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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.