Home / 14,143.86-21,214.98-4,780.71

Finding the Fourth Proportional to 14,143.86, 21,214.98 and 4,780.71

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Solution

The fourth proportional to 14,143.86, 21,214.98 and 4,780.71 is: 7,170.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,143.86 : 21,214.98 = 4,780.71 : x
  2. Step 2: Convert to fraction form
    14,143.86/21,214.98 = 4,780.71/x
  3. Step 3: Cross multiply
    14,143.86x = 21,214.98 × 4,780.71
  4. Step 4: Simplify right side
    14,143.86x = 101,422,667.04
  5. Step 5: Solve for x
    x = 101,422,667.04/14,143.86
  6. Step 6: Final answer
    x = 7,170.79

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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.