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Finding the Fourth Proportional to 17,169.16, 25,721.05 and 9,778.72

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Solution

The fourth proportional to 17,169.16, 25,721.05 and 9,778.72 is: 14,649.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,169.16 : 25,721.05 = 9,778.72 : x
  2. Step 2: Convert to fraction form
    17,169.16/25,721.05 = 9,778.72/x
  3. Step 3: Cross multiply
    17,169.16x = 25,721.05 × 9,778.72
  4. Step 4: Simplify right side
    17,169.16x = 251,518,946.06
  5. Step 5: Solve for x
    x = 251,518,946.06/17,169.16
  6. Step 6: Final answer
    x = 14,649.46

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1.5x scale

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.