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Finding the Fourth Proportional to 21,597.92, 29,806.80 and 12,167.52

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Solution

The fourth proportional to 21,597.92, 29,806.80 and 12,167.52 is: 16,792.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,597.92 : 29,806.80 = 12,167.52 : x
  2. Step 2: Convert to fraction form
    21,597.92/29,806.80 = 12,167.52/x
  3. Step 3: Cross multiply
    21,597.92x = 29,806.80 × 12,167.52
  4. Step 4: Simplify right side
    21,597.92x = 362,674,835.14
  5. Step 5: Solve for x
    x = 362,674,835.14/21,597.92
  6. Step 6: Final answer
    x = 16,792.12

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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.