Home / 21,298.30-29,391.77-12,351.11

Finding the Fourth Proportional to 21,298.30, 29,391.77 and 12,351.11

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Solution

The fourth proportional to 21,298.30, 29,391.77 and 12,351.11 is: 17,044.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298.30 : 29,391.77 = 12,351.11 : x
  2. Step 2: Convert to fraction form
    21,298.30/29,391.77 = 12,351.11/x
  3. Step 3: Cross multiply
    21,298.30x = 29,391.77 × 12,351.11
  4. Step 4: Simplify right side
    21,298.30x = 363,020,932.19
  5. Step 5: Solve for x
    x = 363,020,932.19/21,298.30
  6. Step 6: Final answer
    x = 17,044.60

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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.