Home / 21,392.48-31,932.08-18,867.44

Finding the Fourth Proportional to 21,392.48, 31,932.08 and 18,867.44

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Solution

The fourth proportional to 21,392.48, 31,932.08 and 18,867.44 is: 28,163.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392.48 : 31,932.08 = 18,867.44 : x
  2. Step 2: Convert to fraction form
    21,392.48/31,932.08 = 18,867.44/x
  3. Step 3: Cross multiply
    21,392.48x = 31,932.08 × 18,867.44
  4. Step 4: Simplify right side
    21,392.48x = 602,476,603.48
  5. Step 5: Solve for x
    x = 602,476,603.48/21,392.48
  6. Step 6: Final answer
    x = 28,163.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.