Home / 18,686.58-25,786.35-10,728.06

Finding the Fourth Proportional to 18,686.58, 25,786.35 and 10,728.06

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Solution

The fourth proportional to 18,686.58, 25,786.35 and 10,728.06 is: 14,804.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.58 : 25,786.35 = 10,728.06 : x
  2. Step 2: Convert to fraction form
    18,686.58/25,786.35 = 10,728.06/x
  3. Step 3: Cross multiply
    18,686.58x = 25,786.35 × 10,728.06
  4. Step 4: Simplify right side
    18,686.58x = 276,637,509.98
  5. Step 5: Solve for x
    x = 276,637,509.98/18,686.58
  6. Step 6: Final answer
    x = 14,804.07

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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.