Home / 14,421.32-19,901.22-8,135.72

Finding the Fourth Proportional to 14,421.32, 19,901.22 and 8,135.72

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Solution

The fourth proportional to 14,421.32, 19,901.22 and 8,135.72 is: 11,227.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,421.32 : 19,901.22 = 8,135.72 : x
  2. Step 2: Convert to fraction form
    14,421.32/19,901.22 = 8,135.72/x
  3. Step 3: Cross multiply
    14,421.32x = 19,901.22 × 8,135.72
  4. Step 4: Simplify right side
    14,421.32x = 161,910,753.58
  5. Step 5: Solve for x
    x = 161,910,753.58/14,421.32
  6. Step 6: Final answer
    x = 11,227.18

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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.