Home / 18,525.81-25,565.62-10,142.31

Finding the Fourth Proportional to 18,525.81, 25,565.62 and 10,142.31

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Solution

The fourth proportional to 18,525.81, 25,565.62 and 10,142.31 is: 13,996.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,525.81 : 25,565.62 = 10,142.31 : x
  2. Step 2: Convert to fraction form
    18,525.81/25,565.62 = 10,142.31/x
  3. Step 3: Cross multiply
    18,525.81x = 25,565.62 × 10,142.31
  4. Step 4: Simplify right side
    18,525.81x = 259,294,443.38
  5. Step 5: Solve for x
    x = 259,294,443.38/18,525.81
  6. Step 6: Final answer
    x = 13,996.39

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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.