Home / 16,821.78-23,208.80-10,108.90

Finding the Fourth Proportional to 16,821.78, 23,208.80 and 10,108.90

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Solution

The fourth proportional to 16,821.78, 23,208.80 and 10,108.90 is: 13,947.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,821.78 : 23,208.80 = 10,108.90 : x
  2. Step 2: Convert to fraction form
    16,821.78/23,208.80 = 10,108.90/x
  3. Step 3: Cross multiply
    16,821.78x = 23,208.80 × 10,108.90
  4. Step 4: Simplify right side
    16,821.78x = 234,615,387.78
  5. Step 5: Solve for x
    x = 234,615,387.78/16,821.78
  6. Step 6: Final answer
    x = 13,947.12

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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.