Home / 21,120.35-29,112.53-16,637.00

Finding the Fourth Proportional to 21,120.35, 29,112.53 and 16,637.00

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Solution

The fourth proportional to 21,120.35, 29,112.53 and 16,637.00 is: 22,932.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,120.35 : 29,112.53 = 16,637.00 : x
  2. Step 2: Convert to fraction form
    21,120.35/29,112.53 = 16,637.00/x
  3. Step 3: Cross multiply
    21,120.35x = 29,112.53 × 16,637.00
  4. Step 4: Simplify right side
    21,120.35x = 484,344,932.86
  5. Step 5: Solve for x
    x = 484,344,932.86/21,120.35
  6. Step 6: Final answer
    x = 22,932.62

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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.