Home / 21,859.18-30,178.22-14,699.49

Finding the Fourth Proportional to 21,859.18, 30,178.22 and 14,699.49

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Solution

The fourth proportional to 21,859.18, 30,178.22 and 14,699.49 is: 20,293.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,859.18 : 30,178.22 = 14,699.49 : x
  2. Step 2: Convert to fraction form
    21,859.18/30,178.22 = 14,699.49/x
  3. Step 3: Cross multiply
    21,859.18x = 30,178.22 × 14,699.49
  4. Step 4: Simplify right side
    21,859.18x = 443,604,508.88
  5. Step 5: Solve for x
    x = 443,604,508.88/21,859.18
  6. Step 6: Final answer
    x = 20,293.74

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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.