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Finding the Fourth Proportional to 14,151.04, 21,212.72 and 7,914.08

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Solution

The fourth proportional to 14,151.04, 21,212.72 and 7,914.08 is: 11,863.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,151.04 : 21,212.72 = 7,914.08 : x
  2. Step 2: Convert to fraction form
    14,151.04/21,212.72 = 7,914.08/x
  3. Step 3: Cross multiply
    14,151.04x = 21,212.72 × 7,914.08
  4. Step 4: Simplify right side
    14,151.04x = 167,879,163.10
  5. Step 5: Solve for x
    x = 167,879,163.10/14,151.04
  6. Step 6: Final answer
    x = 11,863.38

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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.