Home / 14,081.81-21,125.75-4,221.95

Finding the Fourth Proportional to 14,081.81, 21,125.75 and 4,221.95

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Solution

The fourth proportional to 14,081.81, 21,125.75 and 4,221.95 is: 6,333.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,081.81 : 21,125.75 = 4,221.95 : x
  2. Step 2: Convert to fraction form
    14,081.81/21,125.75 = 4,221.95/x
  3. Step 3: Cross multiply
    14,081.81x = 21,125.75 × 4,221.95
  4. Step 4: Simplify right side
    14,081.81x = 89,191,733.47
  5. Step 5: Solve for x
    x = 89,191,733.47/14,081.81
  6. Step 6: Final answer
    x = 6,333.83

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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.