Home / 14,186.66-21,281.43-5,428.94

Finding the Fourth Proportional to 14,186.66, 21,281.43 and 5,428.94

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Solution

The fourth proportional to 14,186.66, 21,281.43 and 5,428.94 is: 8,143.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,186.66 : 21,281.43 = 5,428.94 : x
  2. Step 2: Convert to fraction form
    14,186.66/21,281.43 = 5,428.94/x
  3. Step 3: Cross multiply
    14,186.66x = 21,281.43 × 5,428.94
  4. Step 4: Simplify right side
    14,186.66x = 115,535,606.58
  5. Step 5: Solve for x
    x = 115,535,606.58/14,186.66
  6. Step 6: Final answer
    x = 8,143.96

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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.