Home / 28,470.41-39,289.19-15,895.16

Finding the Fourth Proportional to 28,470.41, 39,289.19 and 15,895.16

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Solution

The fourth proportional to 28,470.41, 39,289.19 and 15,895.16 is: 21,935.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,470.41 : 39,289.19 = 15,895.16 : x
  2. Step 2: Convert to fraction form
    28,470.41/39,289.19 = 15,895.16/x
  3. Step 3: Cross multiply
    28,470.41x = 39,289.19 × 15,895.16
  4. Step 4: Simplify right side
    28,470.41x = 624,507,685.40
  5. Step 5: Solve for x
    x = 624,507,685.40/28,470.41
  6. Step 6: Final answer
    x = 21,935.33

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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.