Home / 21,073.08-29,079.66-11,511.12

Finding the Fourth Proportional to 21,073.08, 29,079.66 and 11,511.12

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Solution

The fourth proportional to 21,073.08, 29,079.66 and 11,511.12 is: 15,884.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.08 : 29,079.66 = 11,511.12 : x
  2. Step 2: Convert to fraction form
    21,073.08/29,079.66 = 11,511.12/x
  3. Step 3: Cross multiply
    21,073.08x = 29,079.66 × 11,511.12
  4. Step 4: Simplify right side
    21,073.08x = 334,739,455.82
  5. Step 5: Solve for x
    x = 334,739,455.82/21,073.08
  6. Step 6: Final answer
    x = 15,884.70

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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.