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Finding the Fourth Proportional to 34,393.60, 51,541.80 and 21,206.80

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Solution

The fourth proportional to 34,393.60, 51,541.80 and 21,206.80 is: 31,780.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,393.60 : 51,541.80 = 21,206.80 : x
  2. Step 2: Convert to fraction form
    34,393.60/51,541.80 = 21,206.80/x
  3. Step 3: Cross multiply
    34,393.60x = 51,541.80 × 21,206.80
  4. Step 4: Simplify right side
    34,393.60x = 1,093,036,644.24
  5. Step 5: Solve for x
    x = 1,093,036,644.24/34,393.60
  6. Step 6: Final answer
    x = 31,780.23

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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.