Home / 21,290.08-29,375.04-11,856.28

Finding the Fourth Proportional to 21,290.08, 29,375.04 and 11,856.28

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Solution

The fourth proportional to 21,290.08, 29,375.04 and 11,856.28 is: 16,358.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290.08 : 29,375.04 = 11,856.28 : x
  2. Step 2: Convert to fraction form
    21,290.08/29,375.04 = 11,856.28/x
  3. Step 3: Cross multiply
    21,290.08x = 29,375.04 × 11,856.28
  4. Step 4: Simplify right side
    21,290.08x = 348,278,699.25
  5. Step 5: Solve for x
    x = 348,278,699.25/21,290.08
  6. Step 6: Final answer
    x = 16,358.73

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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.