Home / 14,005.81-21,001.42-4,143.76

Finding the Fourth Proportional to 14,005.81, 21,001.42 and 4,143.76

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Solution

The fourth proportional to 14,005.81, 21,001.42 and 4,143.76 is: 6,213.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,005.81 : 21,001.42 = 4,143.76 : x
  2. Step 2: Convert to fraction form
    14,005.81/21,001.42 = 4,143.76/x
  3. Step 3: Cross multiply
    14,005.81x = 21,001.42 × 4,143.76
  4. Step 4: Simplify right side
    14,005.81x = 87,024,844.14
  5. Step 5: Solve for x
    x = 87,024,844.14/14,005.81
  6. Step 6: Final answer
    x = 6,213.48

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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.