Home / 13,851.46-19,116.62-7,801.76

Finding the Fourth Proportional to 13,851.46, 19,116.62 and 7,801.76

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Solution

The fourth proportional to 13,851.46, 19,116.62 and 7,801.76 is: 10,767.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,851.46 : 19,116.62 = 7,801.76 : x
  2. Step 2: Convert to fraction form
    13,851.46/19,116.62 = 7,801.76/x
  3. Step 3: Cross multiply
    13,851.46x = 19,116.62 × 7,801.76
  4. Step 4: Simplify right side
    13,851.46x = 149,143,281.25
  5. Step 5: Solve for x
    x = 149,143,281.25/13,851.46
  6. Step 6: Final answer
    x = 10,767.33

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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.