Home / 21,218.38-29,281.45-11,659.04

Finding the Fourth Proportional to 21,218.38, 29,281.45 and 11,659.04

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Solution

The fourth proportional to 21,218.38, 29,281.45 and 11,659.04 is: 16,089.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.38 : 29,281.45 = 11,659.04 : x
  2. Step 2: Convert to fraction form
    21,218.38/29,281.45 = 11,659.04/x
  3. Step 3: Cross multiply
    21,218.38x = 29,281.45 × 11,659.04
  4. Step 4: Simplify right side
    21,218.38x = 341,393,596.81
  5. Step 5: Solve for x
    x = 341,393,596.81/21,218.38
  6. Step 6: Final answer
    x = 16,089.52

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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.