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Finding the Fourth Proportional to 18,158.94, 27,210.66 and 7,623.24

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Solution

The fourth proportional to 18,158.94, 27,210.66 and 7,623.24 is: 11,423.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,158.94 : 27,210.66 = 7,623.24 : x
  2. Step 2: Convert to fraction form
    18,158.94/27,210.66 = 7,623.24/x
  3. Step 3: Cross multiply
    18,158.94x = 27,210.66 × 7,623.24
  4. Step 4: Simplify right side
    18,158.94x = 207,433,391.74
  5. Step 5: Solve for x
    x = 207,433,391.74/18,158.94
  6. Step 6: Final answer
    x = 11,423.21

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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.