Home / 21,098.22-29,106.75-12,143.58

Finding the Fourth Proportional to 21,098.22, 29,106.75 and 12,143.58

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Solution

The fourth proportional to 21,098.22, 29,106.75 and 12,143.58 is: 16,753.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.22 : 29,106.75 = 12,143.58 : x
  2. Step 2: Convert to fraction form
    21,098.22/29,106.75 = 12,143.58/x
  3. Step 3: Cross multiply
    21,098.22x = 29,106.75 × 12,143.58
  4. Step 4: Simplify right side
    21,098.22x = 353,460,147.17
  5. Step 5: Solve for x
    x = 353,460,147.17/21,098.22
  6. Step 6: Final answer
    x = 16,753.08

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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.