Home / 21,085.08-29,097-11,653.68

Finding the Fourth Proportional to 21,085.08, 29,097 and 11,653.68

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Solution

The fourth proportional to 21,085.08, 29,097 and 11,653.68 is: 16,081.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085.08 : 29,097 = 11,653.68 : x
  2. Step 2: Convert to fraction form
    21,085.08/29,097 = 11,653.68/x
  3. Step 3: Cross multiply
    21,085.08x = 29,097 × 11,653.68
  4. Step 4: Simplify right side
    21,085.08x = 339,087,126.96
  5. Step 5: Solve for x
    x = 339,087,126.96/21,085.08
  6. Step 6: Final answer
    x = 16,081.85

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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.