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Finding the Fourth Proportional to 21,495.68, 29,664.04 and 12,064.24

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Solution

The fourth proportional to 21,495.68, 29,664.04 and 12,064.24 is: 16,648.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,495.68 : 29,664.04 = 12,064.24 : x
  2. Step 2: Convert to fraction form
    21,495.68/29,664.04 = 12,064.24/x
  3. Step 3: Cross multiply
    21,495.68x = 29,664.04 × 12,064.24
  4. Step 4: Simplify right side
    21,495.68x = 357,874,097.93
  5. Step 5: Solve for x
    x = 357,874,097.93/21,495.68
  6. Step 6: Final answer
    x = 16,648.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.