Home / 21,085.84-29,098.08-11,655.04

Finding the Fourth Proportional to 21,085.84, 29,098.08 and 11,655.04

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Solution

The fourth proportional to 21,085.84, 29,098.08 and 11,655.04 is: 16,083.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085.84 : 29,098.08 = 11,655.04 : x
  2. Step 2: Convert to fraction form
    21,085.84/29,098.08 = 11,655.04/x
  3. Step 3: Cross multiply
    21,085.84x = 29,098.08 × 11,655.04
  4. Step 4: Simplify right side
    21,085.84x = 339,139,286.32
  5. Step 5: Solve for x
    x = 339,139,286.32/21,085.84
  6. Step 6: Final answer
    x = 16,083.75

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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.