Home / 14,005.25-21,000.45-4,143.17

Finding the Fourth Proportional to 14,005.25, 21,000.45 and 4,143.17

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Solution

The fourth proportional to 14,005.25, 21,000.45 and 4,143.17 is: 6,212.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,005.25 : 21,000.45 = 4,143.17 : x
  2. Step 2: Convert to fraction form
    14,005.25/21,000.45 = 4,143.17/x
  3. Step 3: Cross multiply
    14,005.25x = 21,000.45 × 4,143.17
  4. Step 4: Simplify right side
    14,005.25x = 87,008,434.43
  5. Step 5: Solve for x
    x = 87,008,434.43/14,005.25
  6. Step 6: Final answer
    x = 6,212.56

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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.