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Finding the Fourth Proportional to 19,273.68, 28,831.32 and 15,385.68

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Solution

The fourth proportional to 19,273.68, 28,831.32 and 15,385.68 is: 23,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,273.68 : 28,831.32 = 15,385.68 : x
  2. Step 2: Convert to fraction form
    19,273.68/28,831.32 = 15,385.68/x
  3. Step 3: Cross multiply
    19,273.68x = 28,831.32 × 15,385.68
  4. Step 4: Simplify right side
    19,273.68x = 443,589,463.50
  5. Step 5: Solve for x
    x = 443,589,463.50/19,273.68
  6. Step 6: Final answer
    x = 23,015.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.