Home / 13,186.48-19,781.44-4,872.32

Finding the Fourth Proportional to 13,186.48, 19,781.44 and 4,872.32

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Solution

The fourth proportional to 13,186.48, 19,781.44 and 4,872.32 is: 7,309.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.48 : 19,781.44 = 4,872.32 : x
  2. Step 2: Convert to fraction form
    13,186.48/19,781.44 = 4,872.32/x
  3. Step 3: Cross multiply
    13,186.48x = 19,781.44 × 4,872.32
  4. Step 4: Simplify right side
    13,186.48x = 96,381,505.74
  5. Step 5: Solve for x
    x = 96,381,505.74/13,186.48
  6. Step 6: Final answer
    x = 7,309.12

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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.