Home / 21,898.38-30,219.88-11,962.38

Finding the Fourth Proportional to 21,898.38, 30,219.88 and 11,962.38

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Solution

The fourth proportional to 21,898.38, 30,219.88 and 11,962.38 is: 16,508.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.38 : 30,219.88 = 11,962.38 : x
  2. Step 2: Convert to fraction form
    21,898.38/30,219.88 = 11,962.38/x
  3. Step 3: Cross multiply
    21,898.38x = 30,219.88 × 11,962.38
  4. Step 4: Simplify right side
    21,898.38x = 361,501,688.11
  5. Step 5: Solve for x
    x = 361,501,688.11/21,898.38
  6. Step 6: Final answer
    x = 16,508.15

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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.