Home / 21,541.25-29,724.65-11,979.58

Finding the Fourth Proportional to 21,541.25, 29,724.65 and 11,979.58

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Solution

The fourth proportional to 21,541.25, 29,724.65 and 11,979.58 is: 16,530.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,541.25 : 29,724.65 = 11,979.58 : x
  2. Step 2: Convert to fraction form
    21,541.25/29,724.65 = 11,979.58/x
  3. Step 3: Cross multiply
    21,541.25x = 29,724.65 × 11,979.58
  4. Step 4: Simplify right side
    21,541.25x = 356,088,762.75
  5. Step 5: Solve for x
    x = 356,088,762.75/21,541.25
  6. Step 6: Final answer
    x = 16,530.56

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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.