Home / 19,869.52-27,420.72-10,918.08

Finding the Fourth Proportional to 19,869.52, 27,420.72 and 10,918.08

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Solution

The fourth proportional to 19,869.52, 27,420.72 and 10,918.08 is: 15,067.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.52 : 27,420.72 = 10,918.08 : x
  2. Step 2: Convert to fraction form
    19,869.52/27,420.72 = 10,918.08/x
  3. Step 3: Cross multiply
    19,869.52x = 27,420.72 × 10,918.08
  4. Step 4: Simplify right side
    19,869.52x = 299,381,614.62
  5. Step 5: Solve for x
    x = 299,381,614.62/19,869.52
  6. Step 6: Final answer
    x = 15,067.38

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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.