Home / 30,831.89-42,548.13-16,684.73

Finding the Fourth Proportional to 30,831.89, 42,548.13 and 16,684.73

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Solution

The fourth proportional to 30,831.89, 42,548.13 and 16,684.73 is: 23,025.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,831.89 : 42,548.13 = 16,684.73 : x
  2. Step 2: Convert to fraction form
    30,831.89/42,548.13 = 16,684.73/x
  3. Step 3: Cross multiply
    30,831.89x = 42,548.13 × 16,684.73
  4. Step 4: Simplify right side
    30,831.89x = 709,904,070.44
  5. Step 5: Solve for x
    x = 709,904,070.44/30,831.89
  6. Step 6: Final answer
    x = 23,025.00

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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.