Home / 16,980.20-23,407.92-11,929.28

Finding the Fourth Proportional to 16,980.20, 23,407.92 and 11,929.28

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Solution

The fourth proportional to 16,980.20, 23,407.92 and 11,929.28 is: 16,445.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,980.20 : 23,407.92 = 11,929.28 : x
  2. Step 2: Convert to fraction form
    16,980.20/23,407.92 = 11,929.28/x
  3. Step 3: Cross multiply
    16,980.20x = 23,407.92 × 11,929.28
  4. Step 4: Simplify right side
    16,980.20x = 279,239,631.90
  5. Step 5: Solve for x
    x = 279,239,631.90/16,980.20
  6. Step 6: Final answer
    x = 16,445.01

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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.