Home / 14,186.69-21,281.49-5,428.97

Finding the Fourth Proportional to 14,186.69, 21,281.49 and 5,428.97

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Solution

The fourth proportional to 14,186.69, 21,281.49 and 5,428.97 is: 8,144.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,186.69 : 21,281.49 = 5,428.97 : x
  2. Step 2: Convert to fraction form
    14,186.69/21,281.49 = 5,428.97/x
  3. Step 3: Cross multiply
    14,186.69x = 21,281.49 × 5,428.97
  4. Step 4: Simplify right side
    14,186.69x = 115,536,570.77
  5. Step 5: Solve for x
    x = 115,536,570.77/14,186.69
  6. Step 6: Final answer
    x = 8,144.01

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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.