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Finding the Fourth Proportional to 21,689.74, 32,534.61 and 6,898.69

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Solution

The fourth proportional to 21,689.74, 32,534.61 and 6,898.69 is: 10,348.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,689.74 : 32,534.61 = 6,898.69 : x
  2. Step 2: Convert to fraction form
    21,689.74/32,534.61 = 6,898.69/x
  3. Step 3: Cross multiply
    21,689.74x = 32,534.61 × 6,898.69
  4. Step 4: Simplify right side
    21,689.74x = 224,446,188.66
  5. Step 5: Solve for x
    x = 224,446,188.66/21,689.74
  6. Step 6: Final answer
    x = 10,348.04

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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.