Home / 19,869.92-27,421.08-10,917.98

Finding the Fourth Proportional to 19,869.92, 27,421.08 and 10,917.98

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Solution

The fourth proportional to 19,869.92, 27,421.08 and 10,917.98 is: 15,067.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.92 : 27,421.08 = 10,917.98 : x
  2. Step 2: Convert to fraction form
    19,869.92/27,421.08 = 10,917.98/x
  3. Step 3: Cross multiply
    19,869.92x = 27,421.08 × 10,917.98
  4. Step 4: Simplify right side
    19,869.92x = 299,382,803.02
  5. Step 5: Solve for x
    x = 299,382,803.02/19,869.92
  6. Step 6: Final answer
    x = 15,067.14

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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.