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Finding the Fourth Proportional to 21,752, 32,628 and 9,440

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Solution

The fourth proportional to 21,752, 32,628 and 9,440 is: 14,160

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,752 : 32,628 = 9,440 : x
  2. Step 2: Convert to fraction form
    21,752/32,628 = 9,440/x
  3. Step 3: Cross multiply
    21,752x = 32,628 × 9,440
  4. Step 4: Simplify right side
    21,752x = 308,008,320
  5. Step 5: Solve for x
    x = 308,008,320/21,752
  6. Step 6: Final answer
    x = 14,160

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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.