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Finding the Fourth Proportional to 13,959.13, 20,914.08 and 7,370.77

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Solution

The fourth proportional to 13,959.13, 20,914.08 and 7,370.77 is: 11,043.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.13 : 20,914.08 = 7,370.77 : x
  2. Step 2: Convert to fraction form
    13,959.13/20,914.08 = 7,370.77/x
  3. Step 3: Cross multiply
    13,959.13x = 20,914.08 × 7,370.77
  4. Step 4: Simplify right side
    13,959.13x = 154,152,873.44
  5. Step 5: Solve for x
    x = 154,152,873.44/13,959.13
  6. Step 6: Final answer
    x = 11,043.16

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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.