Home / 28,470.06-39,287.43-15,894.54

Finding the Fourth Proportional to 28,470.06, 39,287.43 and 15,894.54

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Solution

The fourth proportional to 28,470.06, 39,287.43 and 15,894.54 is: 21,933.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,470.06 : 39,287.43 = 15,894.54 : x
  2. Step 2: Convert to fraction form
    28,470.06/39,287.43 = 15,894.54/x
  3. Step 3: Cross multiply
    28,470.06x = 39,287.43 × 15,894.54
  4. Step 4: Simplify right side
    28,470.06x = 624,455,627.63
  5. Step 5: Solve for x
    x = 624,455,627.63/28,470.06
  6. Step 6: Final answer
    x = 21,933.77

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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.