Home / 14,789.73-20,407.19-8,415.31

Finding the Fourth Proportional to 14,789.73, 20,407.19 and 8,415.31

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Solution

The fourth proportional to 14,789.73, 20,407.19 and 8,415.31 is: 11,611.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,789.73 : 20,407.19 = 8,415.31 : x
  2. Step 2: Convert to fraction form
    14,789.73/20,407.19 = 8,415.31/x
  3. Step 3: Cross multiply
    14,789.73x = 20,407.19 × 8,415.31
  4. Step 4: Simplify right side
    14,789.73x = 171,732,728.04
  5. Step 5: Solve for x
    x = 171,732,728.04/14,789.73
  6. Step 6: Final answer
    x = 11,611.62

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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.