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Finding the Fourth Proportional to 34,391.60, 51,538.80 and 21,204.80

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Solution

The fourth proportional to 34,391.60, 51,538.80 and 21,204.80 is: 31,777.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,391.60 : 51,538.80 = 21,204.80 : x
  2. Step 2: Convert to fraction form
    34,391.60/51,538.80 = 21,204.80/x
  3. Step 3: Cross multiply
    34,391.60x = 51,538.80 × 21,204.80
  4. Step 4: Simplify right side
    34,391.60x = 1,092,869,946.24
  5. Step 5: Solve for x
    x = 1,092,869,946.24/34,391.60
  6. Step 6: Final answer
    x = 31,777.23

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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.