Home / 29,638.56-40,831.21-20,670.04

Finding the Fourth Proportional to 29,638.56, 40,831.21 and 20,670.04

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Solution

The fourth proportional to 29,638.56, 40,831.21 and 20,670.04 is: 28,475.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,638.56 : 40,831.21 = 20,670.04 : x
  2. Step 2: Convert to fraction form
    29,638.56/40,831.21 = 20,670.04/x
  3. Step 3: Cross multiply
    29,638.56x = 40,831.21 × 20,670.04
  4. Step 4: Simplify right side
    29,638.56x = 843,982,649.28
  5. Step 5: Solve for x
    x = 843,982,649.28/29,638.56
  6. Step 6: Final answer
    x = 28,475.83

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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.