Home / 12,621.51-18,923.42-9,065.81

Finding the Fourth Proportional to 12,621.51, 18,923.42 and 9,065.81

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Solution

The fourth proportional to 12,621.51, 18,923.42 and 9,065.81 is: 13,592.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.51 : 18,923.42 = 9,065.81 : x
  2. Step 2: Convert to fraction form
    12,621.51/18,923.42 = 9,065.81/x
  3. Step 3: Cross multiply
    12,621.51x = 18,923.42 × 9,065.81
  4. Step 4: Simplify right side
    12,621.51x = 171,555,990.32
  5. Step 5: Solve for x
    x = 171,555,990.32/12,621.51
  6. Step 6: Final answer
    x = 13,592.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.