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Finding the Fourth Proportional to 14,102.92, 19,462.74 and 7,815.16

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Solution

The fourth proportional to 14,102.92, 19,462.74 and 7,815.16 is: 10,785.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,102.92 : 19,462.74 = 7,815.16 : x
  2. Step 2: Convert to fraction form
    14,102.92/19,462.74 = 7,815.16/x
  3. Step 3: Cross multiply
    14,102.92x = 19,462.74 × 7,815.16
  4. Step 4: Simplify right side
    14,102.92x = 152,104,427.14
  5. Step 5: Solve for x
    x = 152,104,427.14/14,102.92
  6. Step 6: Final answer
    x = 10,785.31

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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.