Home / 14,672.91-20,243.31-9,639.87

Finding the Fourth Proportional to 14,672.91, 20,243.31 and 9,639.87

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Solution

The fourth proportional to 14,672.91, 20,243.31 and 9,639.87 is: 13,299.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,672.91 : 20,243.31 = 9,639.87 : x
  2. Step 2: Convert to fraction form
    14,672.91/20,243.31 = 9,639.87/x
  3. Step 3: Cross multiply
    14,672.91x = 20,243.31 × 9,639.87
  4. Step 4: Simplify right side
    14,672.91x = 195,142,876.77
  5. Step 5: Solve for x
    x = 195,142,876.77/14,672.91
  6. Step 6: Final answer
    x = 13,299.53

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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.