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Finding the Fourth Proportional to 28,641.09, 39,525.03 and 15,894.48

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Solution

The fourth proportional to 28,641.09, 39,525.03 and 15,894.48 is: 21,934.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,641.09 : 39,525.03 = 15,894.48 : x
  2. Step 2: Convert to fraction form
    28,641.09/39,525.03 = 15,894.48/x
  3. Step 3: Cross multiply
    28,641.09x = 39,525.03 × 15,894.48
  4. Step 4: Simplify right side
    28,641.09x = 628,229,798.83
  5. Step 5: Solve for x
    x = 628,229,798.83/28,641.09
  6. Step 6: Final answer
    x = 21,934.56

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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.