Home / 21,644.30-29,867.72-12,085.08

Finding the Fourth Proportional to 21,644.30, 29,867.72 and 12,085.08

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Solution

The fourth proportional to 21,644.30, 29,867.72 and 12,085.08 is: 16,676.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,644.30 : 29,867.72 = 12,085.08 : x
  2. Step 2: Convert to fraction form
    21,644.30/29,867.72 = 12,085.08/x
  3. Step 3: Cross multiply
    21,644.30x = 29,867.72 × 12,085.08
  4. Step 4: Simplify right side
    21,644.30x = 360,953,725.19
  5. Step 5: Solve for x
    x = 360,953,725.19/21,644.30
  6. Step 6: Final answer
    x = 16,676.62

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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.