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Finding the Fourth Proportional to 18,160.91, 25,064.40 and 10,203.15

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Solution

The fourth proportional to 18,160.91, 25,064.40 and 10,203.15 is: 14,081.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,160.91 : 25,064.40 = 10,203.15 : x
  2. Step 2: Convert to fraction form
    18,160.91/25,064.40 = 10,203.15/x
  3. Step 3: Cross multiply
    18,160.91x = 25,064.40 × 10,203.15
  4. Step 4: Simplify right side
    18,160.91x = 255,735,832.86
  5. Step 5: Solve for x
    x = 255,735,832.86/18,160.91
  6. Step 6: Final answer
    x = 14,081.66

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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.