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Finding the Fourth Proportional to 21,610, 32,415 and 7,018

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Solution

The fourth proportional to 21,610, 32,415 and 7,018 is: 10,527

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,610 : 32,415 = 7,018 : x
  2. Step 2: Convert to fraction form
    21,610/32,415 = 7,018/x
  3. Step 3: Cross multiply
    21,610x = 32,415 × 7,018
  4. Step 4: Simplify right side
    21,610x = 227,488,470
  5. Step 5: Solve for x
    x = 227,488,470/21,610
  6. Step 6: Final answer
    x = 10,527

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.