Home / 20,995.39-28,964.28-14,187.23

Finding the Fourth Proportional to 20,995.39, 28,964.28 and 14,187.23

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Solution

The fourth proportional to 20,995.39, 28,964.28 and 14,187.23 is: 19,572.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.39 : 28,964.28 = 14,187.23 : x
  2. Step 2: Convert to fraction form
    20,995.39/28,964.28 = 14,187.23/x
  3. Step 3: Cross multiply
    20,995.39x = 28,964.28 × 14,187.23
  4. Step 4: Simplify right side
    20,995.39x = 410,922,902.14
  5. Step 5: Solve for x
    x = 410,922,902.14/20,995.39
  6. Step 6: Final answer
    x = 19,572.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.