Home / 18,328.95-27,431.12-11,313.41

Finding the Fourth Proportional to 18,328.95, 27,431.12 and 11,313.41

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Solution

The fourth proportional to 18,328.95, 27,431.12 and 11,313.41 is: 16,931.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,328.95 : 27,431.12 = 11,313.41 : x
  2. Step 2: Convert to fraction form
    18,328.95/27,431.12 = 11,313.41/x
  3. Step 3: Cross multiply
    18,328.95x = 27,431.12 × 11,313.41
  4. Step 4: Simplify right side
    18,328.95x = 310,339,398.45
  5. Step 5: Solve for x
    x = 310,339,398.45/18,328.95
  6. Step 6: Final answer
    x = 16,931.65

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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.