Home / 21,381.03-29,505.18-11,949.57

Finding the Fourth Proportional to 21,381.03, 29,505.18 and 11,949.57

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Solution

The fourth proportional to 21,381.03, 29,505.18 and 11,949.57 is: 16,490.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,381.03 : 29,505.18 = 11,949.57 : x
  2. Step 2: Convert to fraction form
    21,381.03/29,505.18 = 11,949.57/x
  3. Step 3: Cross multiply
    21,381.03x = 29,505.18 × 11,949.57
  4. Step 4: Simplify right side
    21,381.03x = 352,574,213.77
  5. Step 5: Solve for x
    x = 352,574,213.77/21,381.03
  6. Step 6: Final answer
    x = 16,490.05

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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.