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Finding the Third Proportional to 8,655.50 and 18,913.50

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Solution

The third proportional to 8,655.50 and 18,913.50 is: 41,328.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.50 : 18,913.50 = 18,913.50 : x
  2. Step 2: Convert to fraction form
    8,655.50/18,913.50 = 18,913.50/x
  3. Step 3: Cross multiply
    8,655.50x = 18,913.50 × 18,913.50
  4. Step 4: Simplify right side
    8,655.50x = 357,720,482.25
  5. Step 5: Solve for x
    x = 357,720,482.25/8,655.50
  6. Step 6: Final answer
    x = 41,328.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.