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Finding the Fourth Proportional to 15,185.25, 20,958.48 and 8,897.63

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Solution

The fourth proportional to 15,185.25, 20,958.48 and 8,897.63 is: 12,280.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,185.25 : 20,958.48 = 8,897.63 : x
  2. Step 2: Convert to fraction form
    15,185.25/20,958.48 = 8,897.63/x
  3. Step 3: Cross multiply
    15,185.25x = 20,958.48 × 8,897.63
  4. Step 4: Simplify right side
    15,185.25x = 186,480,695.61
  5. Step 5: Solve for x
    x = 186,480,695.61/15,185.25
  6. Step 6: Final answer
    x = 12,280.38

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1.5x scale

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.