Home / 18,869.10-26,040.81-11,315.72

Finding the Fourth Proportional to 18,869.10, 26,040.81 and 11,315.72

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Solution

The fourth proportional to 18,869.10, 26,040.81 and 11,315.72 is: 15,616.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869.10 : 26,040.81 = 11,315.72 : x
  2. Step 2: Convert to fraction form
    18,869.10/26,040.81 = 11,315.72/x
  3. Step 3: Cross multiply
    18,869.10x = 26,040.81 × 11,315.72
  4. Step 4: Simplify right side
    18,869.10x = 294,670,384.33
  5. Step 5: Solve for x
    x = 294,670,384.33/18,869.10
  6. Step 6: Final answer
    x = 15,616.56

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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.