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Finding the Fourth Proportional to 19,440, 26,827.20 and 10,608

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Solution

The fourth proportional to 19,440, 26,827.20 and 10,608 is: 14,639.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,440 : 26,827.20 = 10,608 : x
  2. Step 2: Convert to fraction form
    19,440/26,827.20 = 10,608/x
  3. Step 3: Cross multiply
    19,440x = 26,827.20 × 10,608
  4. Step 4: Simplify right side
    19,440x = 284,582,937.60
  5. Step 5: Solve for x
    x = 284,582,937.60/19,440
  6. Step 6: Final answer
    x = 14,639.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.