Home / 19,869.36-27,419.89-10,917.06

Finding the Fourth Proportional to 19,869.36, 27,419.89 and 10,917.06

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Solution

The fourth proportional to 19,869.36, 27,419.89 and 10,917.06 is: 15,065.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.36 : 27,419.89 = 10,917.06 : x
  2. Step 2: Convert to fraction form
    19,869.36/27,419.89 = 10,917.06/x
  3. Step 3: Cross multiply
    19,869.36x = 27,419.89 × 10,917.06
  4. Step 4: Simplify right side
    19,869.36x = 299,344,584.32
  5. Step 5: Solve for x
    x = 299,344,584.32/19,869.36
  6. Step 6: Final answer
    x = 15,065.64

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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.