Home / 40,904.20-61,356.30-21,188.80

Finding the Fourth Proportional to 40,904.20, 61,356.30 and 21,188.80

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Solution

The fourth proportional to 40,904.20, 61,356.30 and 21,188.80 is: 31,783.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,904.20 : 61,356.30 = 21,188.80 : x
  2. Step 2: Convert to fraction form
    40,904.20/61,356.30 = 21,188.80/x
  3. Step 3: Cross multiply
    40,904.20x = 61,356.30 × 21,188.80
  4. Step 4: Simplify right side
    40,904.20x = 1,300,066,369.44
  5. Step 5: Solve for x
    x = 1,300,066,369.44/40,904.20
  6. Step 6: Final answer
    x = 31,783.20

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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.