Home / 19,919.31-27,489.63-10,966.71

Finding the Fourth Proportional to 19,919.31, 27,489.63 and 10,966.71

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Solution

The fourth proportional to 19,919.31, 27,489.63 and 10,966.71 is: 15,134.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,919.31 : 27,489.63 = 10,966.71 : x
  2. Step 2: Convert to fraction form
    19,919.31/27,489.63 = 10,966.71/x
  3. Step 3: Cross multiply
    19,919.31x = 27,489.63 × 10,966.71
  4. Step 4: Simplify right side
    19,919.31x = 301,470,800.22
  5. Step 5: Solve for x
    x = 301,470,800.22/19,919.31
  6. Step 6: Final answer
    x = 15,134.60

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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.