Home / 21,381.19-29,506.95-11,949.75

Finding the Fourth Proportional to 21,381.19, 29,506.95 and 11,949.75

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Solution

The fourth proportional to 21,381.19, 29,506.95 and 11,949.75 is: 16,491.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,381.19 : 29,506.95 = 11,949.75 : x
  2. Step 2: Convert to fraction form
    21,381.19/29,506.95 = 11,949.75/x
  3. Step 3: Cross multiply
    21,381.19x = 29,506.95 × 11,949.75
  4. Step 4: Simplify right side
    21,381.19x = 352,600,675.76
  5. Step 5: Solve for x
    x = 352,600,675.76/21,381.19
  6. Step 6: Final answer
    x = 16,491.16

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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.