Home / 18,057.36-24,919.34-9,990.60

Finding the Fourth Proportional to 18,057.36, 24,919.34 and 9,990.60

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Solution

The fourth proportional to 18,057.36, 24,919.34 and 9,990.60 is: 13,787.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,057.36 : 24,919.34 = 9,990.60 : x
  2. Step 2: Convert to fraction form
    18,057.36/24,919.34 = 9,990.60/x
  3. Step 3: Cross multiply
    18,057.36x = 24,919.34 × 9,990.60
  4. Step 4: Simplify right side
    18,057.36x = 248,959,108.25
  5. Step 5: Solve for x
    x = 248,959,108.25/18,057.36
  6. Step 6: Final answer
    x = 13,787.13

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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.