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Finding the Fourth Proportional to 13,673.52, 18,865.98 and 8,366.40

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Solution

The fourth proportional to 13,673.52, 18,865.98 and 8,366.40 is: 11,543.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.52 : 18,865.98 = 8,366.40 : x
  2. Step 2: Convert to fraction form
    13,673.52/18,865.98 = 8,366.40/x
  3. Step 3: Cross multiply
    13,673.52x = 18,865.98 × 8,366.40
  4. Step 4: Simplify right side
    13,673.52x = 157,840,335.07
  5. Step 5: Solve for x
    x = 157,840,335.07/13,673.52
  6. Step 6: Final answer
    x = 11,543.50

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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.