Home / 14,278.48-21,420.15-4,283.86

Finding the Fourth Proportional to 14,278.48, 21,420.15 and 4,283.86

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Solution

The fourth proportional to 14,278.48, 21,420.15 and 4,283.86 is: 6,426.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.48 : 21,420.15 = 4,283.86 : x
  2. Step 2: Convert to fraction form
    14,278.48/21,420.15 = 4,283.86/x
  3. Step 3: Cross multiply
    14,278.48x = 21,420.15 × 4,283.86
  4. Step 4: Simplify right side
    14,278.48x = 91,760,923.78
  5. Step 5: Solve for x
    x = 91,760,923.78/14,278.48
  6. Step 6: Final answer
    x = 6,426.52

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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.