Home / 21,166.92-29,210.40-12,669.39

Finding the Fourth Proportional to 21,166.92, 29,210.40 and 12,669.39

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Solution

The fourth proportional to 21,166.92, 29,210.40 and 12,669.39 is: 17,483.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,166.92 : 29,210.40 = 12,669.39 : x
  2. Step 2: Convert to fraction form
    21,166.92/29,210.40 = 12,669.39/x
  3. Step 3: Cross multiply
    21,166.92x = 29,210.40 × 12,669.39
  4. Step 4: Simplify right side
    21,166.92x = 370,077,949.66
  5. Step 5: Solve for x
    x = 370,077,949.66/21,166.92
  6. Step 6: Final answer
    x = 17,483.79

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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.