Home / 28,579.32-39,437.56-15,831.65

Finding the Fourth Proportional to 28,579.32, 39,437.56 and 15,831.65

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Solution

The fourth proportional to 28,579.32, 39,437.56 and 15,831.65 is: 21,846.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.32 : 39,437.56 = 15,831.65 : x
  2. Step 2: Convert to fraction form
    28,579.32/39,437.56 = 15,831.65/x
  3. Step 3: Cross multiply
    28,579.32x = 39,437.56 × 15,831.65
  4. Step 4: Simplify right side
    28,579.32x = 624,361,410.01
  5. Step 5: Solve for x
    x = 624,361,410.01/28,579.32
  6. Step 6: Final answer
    x = 21,846.62

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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.