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Finding the Third Proportional to 18,275.63 and 39,307.78

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Solution

The third proportional to 18,275.63 and 39,307.78 is: 84,544.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,275.63 : 39,307.78 = 39,307.78 : x
  2. Step 2: Convert to fraction form
    18,275.63/39,307.78 = 39,307.78/x
  3. Step 3: Cross multiply
    18,275.63x = 39,307.78 × 39,307.78
  4. Step 4: Simplify right side
    18,275.63x = 1,545,101,666.80
  5. Step 5: Solve for x
    x = 1,545,101,666.80/18,275.63
  6. Step 6: Final answer
    x = 84,544.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.