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Finding the Fourth Proportional to 13,648.23, 18,830.48 and 8,337.47

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Solution

The fourth proportional to 13,648.23, 18,830.48 and 8,337.47 is: 11,503.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,648.23 : 18,830.48 = 8,337.47 : x
  2. Step 2: Convert to fraction form
    13,648.23/18,830.48 = 8,337.47/x
  3. Step 3: Cross multiply
    13,648.23x = 18,830.48 × 8,337.47
  4. Step 4: Simplify right side
    13,648.23x = 156,998,426.25
  5. Step 5: Solve for x
    x = 156,998,426.25/13,648.23
  6. Step 6: Final answer
    x = 11,503.21

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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.