Home / 13,969.13-19,278.10-8,665.66

Finding the Fourth Proportional to 13,969.13, 19,278.10 and 8,665.66

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Solution

The fourth proportional to 13,969.13, 19,278.10 and 8,665.66 is: 11,959.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,969.13 : 19,278.10 = 8,665.66 : x
  2. Step 2: Convert to fraction form
    13,969.13/19,278.10 = 8,665.66/x
  3. Step 3: Cross multiply
    13,969.13x = 19,278.10 × 8,665.66
  4. Step 4: Simplify right side
    13,969.13x = 167,057,386.54
  5. Step 5: Solve for x
    x = 167,057,386.54/13,969.13
  6. Step 6: Final answer
    x = 11,959.04

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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.