Home / 28,579.96-39,437.04-15,831.64

Finding the Fourth Proportional to 28,579.96, 39,437.04 and 15,831.64

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Solution

The fourth proportional to 28,579.96, 39,437.04 and 15,831.64 is: 21,845.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.96 : 39,437.04 = 15,831.64 : x
  2. Step 2: Convert to fraction form
    28,579.96/39,437.04 = 15,831.64/x
  3. Step 3: Cross multiply
    28,579.96x = 39,437.04 × 15,831.64
  4. Step 4: Simplify right side
    28,579.96x = 624,353,019.95
  5. Step 5: Solve for x
    x = 624,353,019.95/28,579.96
  6. Step 6: Final answer
    x = 21,845.83

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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.