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Finding the Fourth Proportional to 10,690.16, 14,751.98 and 6,213.70

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Solution

The fourth proportional to 10,690.16, 14,751.98 and 6,213.70 is: 8,574.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,690.16 : 14,751.98 = 6,213.70 : x
  2. Step 2: Convert to fraction form
    10,690.16/14,751.98 = 6,213.70/x
  3. Step 3: Cross multiply
    10,690.16x = 14,751.98 × 6,213.70
  4. Step 4: Simplify right side
    10,690.16x = 91,664,378.13
  5. Step 5: Solve for x
    x = 91,664,378.13/10,690.16
  6. Step 6: Final answer
    x = 8,574.65

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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.