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Finding the Fourth Proportional to 14,502.86, 20,013.27 and 8,215.28

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Solution

The fourth proportional to 14,502.86, 20,013.27 and 8,215.28 is: 11,336.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,502.86 : 20,013.27 = 8,215.28 : x
  2. Step 2: Convert to fraction form
    14,502.86/20,013.27 = 8,215.28/x
  3. Step 3: Cross multiply
    14,502.86x = 20,013.27 × 8,215.28
  4. Step 4: Simplify right side
    14,502.86x = 164,414,616.77
  5. Step 5: Solve for x
    x = 164,414,616.77/14,502.86
  6. Step 6: Final answer
    x = 11,336.70

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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.