Home / 21,549.18-29,737.44-11,988.87

Finding the Fourth Proportional to 21,549.18, 29,737.44 and 11,988.87

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Solution

The fourth proportional to 21,549.18, 29,737.44 and 11,988.87 is: 16,544.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,549.18 : 29,737.44 = 11,988.87 : x
  2. Step 2: Convert to fraction form
    21,549.18/29,737.44 = 11,988.87/x
  3. Step 3: Cross multiply
    21,549.18x = 29,737.44 × 11,988.87
  4. Step 4: Simplify right side
    21,549.18x = 356,518,302.29
  5. Step 5: Solve for x
    x = 356,518,302.29/21,549.18
  6. Step 6: Final answer
    x = 16,544.40

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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.