Home / 21,818.08-30,108.10-13,334.38

Finding the Fourth Proportional to 21,818.08, 30,108.10 and 13,334.38

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Solution

The fourth proportional to 21,818.08, 30,108.10 and 13,334.38 is: 18,400.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,818.08 : 30,108.10 = 13,334.38 : x
  2. Step 2: Convert to fraction form
    21,818.08/30,108.10 = 13,334.38/x
  3. Step 3: Cross multiply
    21,818.08x = 30,108.10 × 13,334.38
  4. Step 4: Simplify right side
    21,818.08x = 401,472,846.48
  5. Step 5: Solve for x
    x = 401,472,846.48/21,818.08
  6. Step 6: Final answer
    x = 18,400.92

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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.