Home / 19,635.47-27,099.71-11,139.68

Finding the Fourth Proportional to 19,635.47, 27,099.71 and 11,139.68

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Solution

The fourth proportional to 19,635.47, 27,099.71 and 11,139.68 is: 15,374.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,635.47 : 27,099.71 = 11,139.68 : x
  2. Step 2: Convert to fraction form
    19,635.47/27,099.71 = 11,139.68/x
  3. Step 3: Cross multiply
    19,635.47x = 27,099.71 × 11,139.68
  4. Step 4: Simplify right side
    19,635.47x = 301,881,906.30
  5. Step 5: Solve for x
    x = 301,881,906.30/19,635.47
  6. Step 6: Final answer
    x = 15,374.32

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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.