Home / 14,153.86-21,228.42-4,290.78

Finding the Fourth Proportional to 14,153.86, 21,228.42 and 4,290.78

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Solution

The fourth proportional to 14,153.86, 21,228.42 and 4,290.78 is: 6,435.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,153.86 : 21,228.42 = 4,290.78 : x
  2. Step 2: Convert to fraction form
    14,153.86/21,228.42 = 4,290.78/x
  3. Step 3: Cross multiply
    14,153.86x = 21,228.42 × 4,290.78
  4. Step 4: Simplify right side
    14,153.86x = 91,086,479.97
  5. Step 5: Solve for x
    x = 91,086,479.97/14,153.86
  6. Step 6: Final answer
    x = 6,435.45

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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.