Home / 14,122.14-21,190.17-9,988.71

Finding the Fourth Proportional to 14,122.14, 21,190.17 and 9,988.71

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Solution

The fourth proportional to 14,122.14, 21,190.17 and 9,988.71 is: 14,987.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,122.14 : 21,190.17 = 9,988.71 : x
  2. Step 2: Convert to fraction form
    14,122.14/21,190.17 = 9,988.71/x
  3. Step 3: Cross multiply
    14,122.14x = 21,190.17 × 9,988.71
  4. Step 4: Simplify right side
    14,122.14x = 211,662,462.98
  5. Step 5: Solve for x
    x = 211,662,462.98/14,122.14
  6. Step 6: Final answer
    x = 14,987.99

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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.