Home / 19,870.68-27,422.85-10,918.26

Finding the Fourth Proportional to 19,870.68, 27,422.85 and 10,918.26

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Solution

The fourth proportional to 19,870.68, 27,422.85 and 10,918.26 is: 15,067.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,870.68 : 27,422.85 = 10,918.26 : x
  2. Step 2: Convert to fraction form
    19,870.68/27,422.85 = 10,918.26/x
  3. Step 3: Cross multiply
    19,870.68x = 27,422.85 × 10,918.26
  4. Step 4: Simplify right side
    19,870.68x = 299,409,847.18
  5. Step 5: Solve for x
    x = 299,409,847.18/19,870.68
  6. Step 6: Final answer
    x = 15,067.92

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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.