Home / 19,869.55-27,419.93-10,917.25

Finding the Fourth Proportional to 19,869.55, 27,419.93 and 10,917.25

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Solution

The fourth proportional to 19,869.55, 27,419.93 and 10,917.25 is: 15,065.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.55 : 27,419.93 = 10,917.25 : x
  2. Step 2: Convert to fraction form
    19,869.55/27,419.93 = 10,917.25/x
  3. Step 3: Cross multiply
    19,869.55x = 27,419.93 × 10,917.25
  4. Step 4: Simplify right side
    19,869.55x = 299,350,176.21
  5. Step 5: Solve for x
    x = 299,350,176.21/19,869.55
  6. Step 6: Final answer
    x = 15,065.78

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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.