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Finding the Third Proportional to 19,785 and 26,428

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Solution

The third proportional to 19,785 and 26,428 is: 35,301.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,785 : 26,428 = 26,428 : x
  2. Step 2: Convert to fraction form
    19,785/26,428 = 26,428/x
  3. Step 3: Cross multiply
    19,785x = 26,428 × 26,428
  4. Step 4: Simplify right side
    19,785x = 698,439,184
  5. Step 5: Solve for x
    x = 698,439,184/19,785
  6. Step 6: Final answer
    x = 35,301.45

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.