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Finding the Fourth Proportional to 21,701.79, 32,541.92 and 6,908.79

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Solution

The fourth proportional to 21,701.79, 32,541.92 and 6,908.79 is: 10,359.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,701.79 : 32,541.92 = 6,908.79 : x
  2. Step 2: Convert to fraction form
    21,701.79/32,541.92 = 6,908.79/x
  3. Step 3: Cross multiply
    21,701.79x = 32,541.92 × 6,908.79
  4. Step 4: Simplify right side
    21,701.79x = 224,825,291.48
  5. Step 5: Solve for x
    x = 224,825,291.48/21,701.79
  6. Step 6: Final answer
    x = 10,359.76

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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.