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Finding the Fourth Proportional to 18,313.21, 27,470.88 and 7,068.61

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Solution

The fourth proportional to 18,313.21, 27,470.88 and 7,068.61 is: 10,603.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,313.21 : 27,470.88 = 7,068.61 : x
  2. Step 2: Convert to fraction form
    18,313.21/27,470.88 = 7,068.61/x
  3. Step 3: Cross multiply
    18,313.21x = 27,470.88 × 7,068.61
  4. Step 4: Simplify right side
    18,313.21x = 194,180,868.40
  5. Step 5: Solve for x
    x = 194,180,868.40/18,313.21
  6. Step 6: Final answer
    x = 10,603.32

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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.