Home / 19,666.56-27,139.68-11,283.12

Finding the Fourth Proportional to 19,666.56, 27,139.68 and 11,283.12

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Solution

The fourth proportional to 19,666.56, 27,139.68 and 11,283.12 is: 15,570.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,666.56 : 27,139.68 = 11,283.12 : x
  2. Step 2: Convert to fraction form
    19,666.56/27,139.68 = 11,283.12/x
  3. Step 3: Cross multiply
    19,666.56x = 27,139.68 × 11,283.12
  4. Step 4: Simplify right side
    19,666.56x = 306,220,266.20
  5. Step 5: Solve for x
    x = 306,220,266.20/19,666.56
  6. Step 6: Final answer
    x = 15,570.61

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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.