Home / 29,652.78-40,945.77-21,180.90

Finding the Fourth Proportional to 29,652.78, 40,945.77 and 21,180.90

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Solution

The fourth proportional to 29,652.78, 40,945.77 and 21,180.90 is: 29,247.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,652.78 : 40,945.77 = 21,180.90 : x
  2. Step 2: Convert to fraction form
    29,652.78/40,945.77 = 21,180.90/x
  3. Step 3: Cross multiply
    29,652.78x = 40,945.77 × 21,180.90
  4. Step 4: Simplify right side
    29,652.78x = 867,268,259.79
  5. Step 5: Solve for x
    x = 867,268,259.79/29,652.78
  6. Step 6: Final answer
    x = 29,247.45

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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.