Home / 21,549.43-29,737.78-11,989.13

Finding the Fourth Proportional to 21,549.43, 29,737.78 and 11,989.13

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Solution

The fourth proportional to 21,549.43, 29,737.78 and 11,989.13 is: 16,544.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,549.43 : 29,737.78 = 11,989.13 : x
  2. Step 2: Convert to fraction form
    21,549.43/29,737.78 = 11,989.13/x
  3. Step 3: Cross multiply
    21,549.43x = 29,737.78 × 11,989.13
  4. Step 4: Simplify right side
    21,549.43x = 356,529,931.67
  5. Step 5: Solve for x
    x = 356,529,931.67/21,549.43
  6. Step 6: Final answer
    x = 16,544.75

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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.