Home / 13,781.85-19,018.90-7,494.22

Finding the Fourth Proportional to 13,781.85, 19,018.90 and 7,494.22

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Solution

The fourth proportional to 13,781.85, 19,018.90 and 7,494.22 is: 10,342.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.85 : 19,018.90 = 7,494.22 : x
  2. Step 2: Convert to fraction form
    13,781.85/19,018.90 = 7,494.22/x
  3. Step 3: Cross multiply
    13,781.85x = 19,018.90 × 7,494.22
  4. Step 4: Simplify right side
    13,781.85x = 142,531,853.90
  5. Step 5: Solve for x
    x = 142,531,853.90/13,781.85
  6. Step 6: Final answer
    x = 10,342.00

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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.