Home / 13,781.53-19,018.56-8,475.22

Finding the Fourth Proportional to 13,781.53, 19,018.56 and 8,475.22

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Solution

The fourth proportional to 13,781.53, 19,018.56 and 8,475.22 is: 11,695.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.53 : 19,018.56 = 8,475.22 : x
  2. Step 2: Convert to fraction form
    13,781.53/19,018.56 = 8,475.22/x
  3. Step 3: Cross multiply
    13,781.53x = 19,018.56 × 8,475.22
  4. Step 4: Simplify right side
    13,781.53x = 161,186,480.08
  5. Step 5: Solve for x
    x = 161,186,480.08/13,781.53
  6. Step 6: Final answer
    x = 11,695.83

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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.