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Finding the Fourth Proportional to 10,500.75, 14,491.04 and 5,785.16

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Solution

The fourth proportional to 10,500.75, 14,491.04 and 5,785.16 is: 7,983.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,500.75 : 14,491.04 = 5,785.16 : x
  2. Step 2: Convert to fraction form
    10,500.75/14,491.04 = 5,785.16/x
  3. Step 3: Cross multiply
    10,500.75x = 14,491.04 × 5,785.16
  4. Step 4: Simplify right side
    10,500.75x = 83,832,883.59
  5. Step 5: Solve for x
    x = 83,832,883.59/10,500.75
  6. Step 6: Final answer
    x = 7,983.51

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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.