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Finding the Fourth Proportional to 15,174.76, 20,941.30 and 8,887.32

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Solution

The fourth proportional to 15,174.76, 20,941.30 and 8,887.32 is: 12,264.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,174.76 : 20,941.30 = 8,887.32 : x
  2. Step 2: Convert to fraction form
    15,174.76/20,941.30 = 8,887.32/x
  3. Step 3: Cross multiply
    15,174.76x = 20,941.30 × 8,887.32
  4. Step 4: Simplify right side
    15,174.76x = 186,112,034.32
  5. Step 5: Solve for x
    x = 186,112,034.32/15,174.76
  6. Step 6: Final answer
    x = 12,264.58

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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.