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Finding the Fourth Proportional to 21,598.79, 32,393.32 and 7,747.79

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Solution

The fourth proportional to 21,598.79, 32,393.32 and 7,747.79 is: 11,619.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,598.79 : 32,393.32 = 7,747.79 : x
  2. Step 2: Convert to fraction form
    21,598.79/32,393.32 = 7,747.79/x
  3. Step 3: Cross multiply
    21,598.79x = 32,393.32 × 7,747.79
  4. Step 4: Simplify right side
    21,598.79x = 250,976,640.76
  5. Step 5: Solve for x
    x = 250,976,640.76/21,598.79
  6. Step 6: Final answer
    x = 11,619.94

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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.