Home / 20,118.02-27,762.45-11,165

Finding the Fourth Proportional to 20,118.02, 27,762.45 and 11,165

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Solution

The fourth proportional to 20,118.02, 27,762.45 and 11,165 is: 15,407.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.02 : 27,762.45 = 11,165 : x
  2. Step 2: Convert to fraction form
    20,118.02/27,762.45 = 11,165/x
  3. Step 3: Cross multiply
    20,118.02x = 27,762.45 × 11,165
  4. Step 4: Simplify right side
    20,118.02x = 309,967,754.25
  5. Step 5: Solve for x
    x = 309,967,754.25/20,118.02
  6. Step 6: Final answer
    x = 15,407.47

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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.