Home / 18,315.68-27,436.05-15,345.54

Finding the Fourth Proportional to 18,315.68, 27,436.05 and 15,345.54

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Solution

The fourth proportional to 18,315.68, 27,436.05 and 15,345.54 is: 22,986.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.68 : 27,436.05 = 15,345.54 : x
  2. Step 2: Convert to fraction form
    18,315.68/27,436.05 = 15,345.54/x
  3. Step 3: Cross multiply
    18,315.68x = 27,436.05 × 15,345.54
  4. Step 4: Simplify right side
    18,315.68x = 421,021,002.72
  5. Step 5: Solve for x
    x = 421,021,002.72/18,315.68
  6. Step 6: Final answer
    x = 22,986.92

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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.