Home / 18,643.67-25,728.35-10,686.36

Finding the Fourth Proportional to 18,643.67, 25,728.35 and 10,686.36

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Solution

The fourth proportional to 18,643.67, 25,728.35 and 10,686.36 is: 14,747.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,643.67 : 25,728.35 = 10,686.36 : x
  2. Step 2: Convert to fraction form
    18,643.67/25,728.35 = 10,686.36/x
  3. Step 3: Cross multiply
    18,643.67x = 25,728.35 × 10,686.36
  4. Step 4: Simplify right side
    18,643.67x = 274,942,356.87
  5. Step 5: Solve for x
    x = 274,942,356.87/18,643.67
  6. Step 6: Final answer
    x = 14,747.23

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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.