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Finding the Fourth Proportional to 10,605.21, 14,623.79 and 6,624.87

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Solution

The fourth proportional to 10,605.21, 14,623.79 and 6,624.87 is: 9,135.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,605.21 : 14,623.79 = 6,624.87 : x
  2. Step 2: Convert to fraction form
    10,605.21/14,623.79 = 6,624.87/x
  3. Step 3: Cross multiply
    10,605.21x = 14,623.79 × 6,624.87
  4. Step 4: Simplify right side
    10,605.21x = 96,880,674.53
  5. Step 5: Solve for x
    x = 96,880,674.53/10,605.21
  6. Step 6: Final answer
    x = 9,135.20

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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.