Home / 21,623.76-29,841.12-12,669.12

Finding the Fourth Proportional to 21,623.76, 29,841.12 and 12,669.12

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Solution

The fourth proportional to 21,623.76, 29,841.12 and 12,669.12 is: 17,483.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,623.76 : 29,841.12 = 12,669.12 : x
  2. Step 2: Convert to fraction form
    21,623.76/29,841.12 = 12,669.12/x
  3. Step 3: Cross multiply
    21,623.76x = 29,841.12 × 12,669.12
  4. Step 4: Simplify right side
    21,623.76x = 378,060,730.21
  5. Step 5: Solve for x
    x = 378,060,730.21/21,623.76
  6. Step 6: Final answer
    x = 17,483.58

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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.