Home / 14,717.80-20,310.06-8,428.96

Finding the Fourth Proportional to 14,717.80, 20,310.06 and 8,428.96

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Solution

The fourth proportional to 14,717.80, 20,310.06 and 8,428.96 is: 11,631.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,717.80 : 20,310.06 = 8,428.96 : x
  2. Step 2: Convert to fraction form
    14,717.80/20,310.06 = 8,428.96/x
  3. Step 3: Cross multiply
    14,717.80x = 20,310.06 × 8,428.96
  4. Step 4: Simplify right side
    14,717.80x = 171,192,683.34
  5. Step 5: Solve for x
    x = 171,192,683.34/14,717.80
  6. Step 6: Final answer
    x = 11,631.68

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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.