Home / 13,781.35-19,018.16-7,493.72

Finding the Fourth Proportional to 13,781.35, 19,018.16 and 7,493.72

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Solution

The fourth proportional to 13,781.35, 19,018.16 and 7,493.72 is: 10,341.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.35 : 19,018.16 = 7,493.72 : x
  2. Step 2: Convert to fraction form
    13,781.35/19,018.16 = 7,493.72/x
  3. Step 3: Cross multiply
    13,781.35x = 19,018.16 × 7,493.72
  4. Step 4: Simplify right side
    13,781.35x = 142,516,765.96
  5. Step 5: Solve for x
    x = 142,516,765.96/13,781.35
  6. Step 6: Final answer
    x = 10,341.28

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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.