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Finding the Fourth Proportional to 21,798.76, 32,696.46 and 7,758.22

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Solution

The fourth proportional to 21,798.76, 32,696.46 and 7,758.22 is: 11,636.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,798.76 : 32,696.46 = 7,758.22 : x
  2. Step 2: Convert to fraction form
    21,798.76/32,696.46 = 7,758.22/x
  3. Step 3: Cross multiply
    21,798.76x = 32,696.46 × 7,758.22
  4. Step 4: Simplify right side
    21,798.76x = 253,666,329.90
  5. Step 5: Solve for x
    x = 253,666,329.90/21,798.76
  6. Step 6: Final answer
    x = 11,636.73

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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.