Home / 21,003.93-28,991.12-12,056.13

Finding the Fourth Proportional to 21,003.93, 28,991.12 and 12,056.13

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Solution

The fourth proportional to 21,003.93, 28,991.12 and 12,056.13 is: 16,640.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003.93 : 28,991.12 = 12,056.13 : x
  2. Step 2: Convert to fraction form
    21,003.93/28,991.12 = 12,056.13/x
  3. Step 3: Cross multiply
    21,003.93x = 28,991.12 × 12,056.13
  4. Step 4: Simplify right side
    21,003.93x = 349,520,651.28
  5. Step 5: Solve for x
    x = 349,520,651.28/21,003.93
  6. Step 6: Final answer
    x = 16,640.73

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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.