Home / 21,943.10-30,281.36-11,871.52

Finding the Fourth Proportional to 21,943.10, 30,281.36 and 11,871.52

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Solution

The fourth proportional to 21,943.10, 30,281.36 and 11,871.52 is: 16,382.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,943.10 : 30,281.36 = 11,871.52 : x
  2. Step 2: Convert to fraction form
    21,943.10/30,281.36 = 11,871.52/x
  3. Step 3: Cross multiply
    21,943.10x = 30,281.36 × 11,871.52
  4. Step 4: Simplify right side
    21,943.10x = 359,485,560.10
  5. Step 5: Solve for x
    x = 359,485,560.10/21,943.10
  6. Step 6: Final answer
    x = 16,382.62

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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.