Home / 13,781.64-19,017.90-7,493.96

Finding the Fourth Proportional to 13,781.64, 19,017.90 and 7,493.96

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Solution

The fourth proportional to 13,781.64, 19,017.90 and 7,493.96 is: 10,341.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.64 : 19,017.90 = 7,493.96 : x
  2. Step 2: Convert to fraction form
    13,781.64/19,017.90 = 7,493.96/x
  3. Step 3: Cross multiply
    13,781.64x = 19,017.90 × 7,493.96
  4. Step 4: Simplify right side
    13,781.64x = 142,519,381.88
  5. Step 5: Solve for x
    x = 142,519,381.88/13,781.64
  6. Step 6: Final answer
    x = 10,341.25

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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.