Home / 28,645.43-39,530.09-15,897.87

Finding the Fourth Proportional to 28,645.43, 39,530.09 and 15,897.87

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Solution

The fourth proportional to 28,645.43, 39,530.09 and 15,897.87 is: 21,938.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,645.43 : 39,530.09 = 15,897.87 : x
  2. Step 2: Convert to fraction form
    28,645.43/39,530.09 = 15,897.87/x
  3. Step 3: Cross multiply
    28,645.43x = 39,530.09 × 15,897.87
  4. Step 4: Simplify right side
    28,645.43x = 628,444,034.26
  5. Step 5: Solve for x
    x = 628,444,034.26/28,645.43
  6. Step 6: Final answer
    x = 21,938.72

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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.