Home / 18,378.84-25,362.78-9,995.28

Finding the Fourth Proportional to 18,378.84, 25,362.78 and 9,995.28

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Solution

The fourth proportional to 18,378.84, 25,362.78 and 9,995.28 is: 13,793.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.84 : 25,362.78 = 9,995.28 : x
  2. Step 2: Convert to fraction form
    18,378.84/25,362.78 = 9,995.28/x
  3. Step 3: Cross multiply
    18,378.84x = 25,362.78 × 9,995.28
  4. Step 4: Simplify right side
    18,378.84x = 253,508,087.68
  5. Step 5: Solve for x
    x = 253,508,087.68/18,378.84
  6. Step 6: Final answer
    x = 13,793.48

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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.