Home / 53,278.18-79,917.30-13,831.98

Finding the Fourth Proportional to 53,278.18, 79,917.30 and 13,831.98

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Solution

The fourth proportional to 53,278.18, 79,917.30 and 13,831.98 is: 20,747.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,278.18 : 79,917.30 = 13,831.98 : x
  2. Step 2: Convert to fraction form
    53,278.18/79,917.30 = 13,831.98/x
  3. Step 3: Cross multiply
    53,278.18x = 79,917.30 × 13,831.98
  4. Step 4: Simplify right side
    53,278.18x = 1,105,414,495.25
  5. Step 5: Solve for x
    x = 1,105,414,495.25/53,278.18
  6. Step 6: Final answer
    x = 20,747.98

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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.