Home / 13,781.75-19,020.42-7,733.66

Finding the Fourth Proportional to 13,781.75, 19,020.42 and 7,733.66

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Solution

The fourth proportional to 13,781.75, 19,020.42 and 7,733.66 is: 10,673.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.75 : 19,020.42 = 7,733.66 : x
  2. Step 2: Convert to fraction form
    13,781.75/19,020.42 = 7,733.66/x
  3. Step 3: Cross multiply
    13,781.75x = 19,020.42 × 7,733.66
  4. Step 4: Simplify right side
    13,781.75x = 147,097,461.34
  5. Step 5: Solve for x
    x = 147,097,461.34/13,781.75
  6. Step 6: Final answer
    x = 10,673.35

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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.