Home / 18,515.46-25,551.09-10,557.81

Finding the Fourth Proportional to 18,515.46, 25,551.09 and 10,557.81

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Solution

The fourth proportional to 18,515.46, 25,551.09 and 10,557.81 is: 14,569.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.46 : 25,551.09 = 10,557.81 : x
  2. Step 2: Convert to fraction form
    18,515.46/25,551.09 = 10,557.81/x
  3. Step 3: Cross multiply
    18,515.46x = 25,551.09 × 10,557.81
  4. Step 4: Simplify right side
    18,515.46x = 269,763,553.51
  5. Step 5: Solve for x
    x = 269,763,553.51/18,515.46
  6. Step 6: Final answer
    x = 14,569.64

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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.