Home / 28,470.12-39,287.34-15,892.44

Finding the Fourth Proportional to 28,470.12, 39,287.34 and 15,892.44

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Solution

The fourth proportional to 28,470.12, 39,287.34 and 15,892.44 is: 21,930.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,470.12 : 39,287.34 = 15,892.44 : x
  2. Step 2: Convert to fraction form
    28,470.12/39,287.34 = 15,892.44/x
  3. Step 3: Cross multiply
    28,470.12x = 39,287.34 × 15,892.44
  4. Step 4: Simplify right side
    28,470.12x = 624,371,693.71
  5. Step 5: Solve for x
    x = 624,371,693.71/28,470.12
  6. Step 6: Final answer
    x = 21,930.77

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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.