Home / 21,898.31-30,219.66-11,826.75

Finding the Fourth Proportional to 21,898.31, 30,219.66 and 11,826.75

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Solution

The fourth proportional to 21,898.31, 30,219.66 and 11,826.75 is: 16,320.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.31 : 30,219.66 = 11,826.75 : x
  2. Step 2: Convert to fraction form
    21,898.31/30,219.66 = 11,826.75/x
  3. Step 3: Cross multiply
    21,898.31x = 30,219.66 × 11,826.75
  4. Step 4: Simplify right side
    21,898.31x = 357,400,477.23
  5. Step 5: Solve for x
    x = 357,400,477.23/21,898.31
  6. Step 6: Final answer
    x = 16,320.92

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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.