Home / 18,378.80-25,369.32-10,826.36

Finding the Fourth Proportional to 18,378.80, 25,369.32 and 10,826.36

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Solution

The fourth proportional to 18,378.80, 25,369.32 and 10,826.36 is: 14,944.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.80 : 25,369.32 = 10,826.36 : x
  2. Step 2: Convert to fraction form
    18,378.80/25,369.32 = 10,826.36/x
  3. Step 3: Cross multiply
    18,378.80x = 25,369.32 × 10,826.36
  4. Step 4: Simplify right side
    18,378.80x = 274,657,391.28
  5. Step 5: Solve for x
    x = 274,657,391.28/18,378.80
  6. Step 6: Final answer
    x = 14,944.25

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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.