Home / 13,609.83-18,781.43-7,641.36

Finding the Fourth Proportional to 13,609.83, 18,781.43 and 7,641.36

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Solution

The fourth proportional to 13,609.83, 18,781.43 and 7,641.36 is: 10,545.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609.83 : 18,781.43 = 7,641.36 : x
  2. Step 2: Convert to fraction form
    13,609.83/18,781.43 = 7,641.36/x
  3. Step 3: Cross multiply
    13,609.83x = 18,781.43 × 7,641.36
  4. Step 4: Simplify right side
    13,609.83x = 143,515,629.74
  5. Step 5: Solve for x
    x = 143,515,629.74/13,609.83
  6. Step 6: Final answer
    x = 10,545.00

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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.