Home / 21,995.30-30,353.51-12,563.86

Finding the Fourth Proportional to 21,995.30, 30,353.51 and 12,563.86

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Solution

The fourth proportional to 21,995.30, 30,353.51 and 12,563.86 is: 17,338.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.30 : 30,353.51 = 12,563.86 : x
  2. Step 2: Convert to fraction form
    21,995.30/30,353.51 = 12,563.86/x
  3. Step 3: Cross multiply
    21,995.30x = 30,353.51 × 12,563.86
  4. Step 4: Simplify right side
    21,995.30x = 381,357,227.25
  5. Step 5: Solve for x
    x = 381,357,227.25/21,995.30
  6. Step 6: Final answer
    x = 17,338.13

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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.