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Finding the Fourth Proportional to 42,360, 63,540 and 17,736

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Solution

The fourth proportional to 42,360, 63,540 and 17,736 is: 26,604

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,360 : 63,540 = 17,736 : x
  2. Step 2: Convert to fraction form
    42,360/63,540 = 17,736/x
  3. Step 3: Cross multiply
    42,360x = 63,540 × 17,736
  4. Step 4: Simplify right side
    42,360x = 1,126,945,440
  5. Step 5: Solve for x
    x = 1,126,945,440/42,360
  6. Step 6: Final answer
    x = 26,604

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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.