Home / 14,129.11-21,167.80-6,618.88

Finding the Fourth Proportional to 14,129.11, 21,167.80 and 6,618.88

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Solution

The fourth proportional to 14,129.11, 21,167.80 and 6,618.88 is: 9,916.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,129.11 : 21,167.80 = 6,618.88 : x
  2. Step 2: Convert to fraction form
    14,129.11/21,167.80 = 6,618.88/x
  3. Step 3: Cross multiply
    14,129.11x = 21,167.80 × 6,618.88
  4. Step 4: Simplify right side
    14,129.11x = 140,107,128.06
  5. Step 5: Solve for x
    x = 140,107,128.06/14,129.11
  6. Step 6: Final answer
    x = 9,916.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.