Home / 27,853.11-38,438.06-15,918.39

Finding the Fourth Proportional to 27,853.11, 38,438.06 and 15,918.39

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Solution

The fourth proportional to 27,853.11, 38,438.06 and 15,918.39 is: 21,967.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,853.11 : 38,438.06 = 15,918.39 : x
  2. Step 2: Convert to fraction form
    27,853.11/38,438.06 = 15,918.39/x
  3. Step 3: Cross multiply
    27,853.11x = 38,438.06 × 15,918.39
  4. Step 4: Simplify right side
    27,853.11x = 611,871,950.33
  5. Step 5: Solve for x
    x = 611,871,950.33/27,853.11
  6. Step 6: Final answer
    x = 21,967.81

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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.