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Finding the Fourth Proportional to 21,597.79, 32,391.82 and 7,746.79

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Solution

The fourth proportional to 21,597.79, 32,391.82 and 7,746.79 is: 11,618.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,597.79 : 32,391.82 = 7,746.79 : x
  2. Step 2: Convert to fraction form
    21,597.79/32,391.82 = 7,746.79/x
  3. Step 3: Cross multiply
    21,597.79x = 32,391.82 × 7,746.79
  4. Step 4: Simplify right side
    21,597.79x = 250,932,638.48
  5. Step 5: Solve for x
    x = 250,932,638.48/21,597.79
  6. Step 6: Final answer
    x = 11,618.44

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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.