Home / 39,443.07-54,431.22-21,538.08

Finding the Fourth Proportional to 39,443.07, 54,431.22 and 21,538.08

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Solution

The fourth proportional to 39,443.07, 54,431.22 and 21,538.08 is: 29,722.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,443.07 : 54,431.22 = 21,538.08 : x
  2. Step 2: Convert to fraction form
    39,443.07/54,431.22 = 21,538.08/x
  3. Step 3: Cross multiply
    39,443.07x = 54,431.22 × 21,538.08
  4. Step 4: Simplify right side
    39,443.07x = 1,172,343,970.86
  5. Step 5: Solve for x
    x = 1,172,343,970.86/39,443.07
  6. Step 6: Final answer
    x = 29,722.43

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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.