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Finding the Fourth Proportional to 13,807.92, 19,054.92 and 7,520.28

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Solution

The fourth proportional to 13,807.92, 19,054.92 and 7,520.28 is: 10,377.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,807.92 : 19,054.92 = 7,520.28 : x
  2. Step 2: Convert to fraction form
    13,807.92/19,054.92 = 7,520.28/x
  3. Step 3: Cross multiply
    13,807.92x = 19,054.92 × 7,520.28
  4. Step 4: Simplify right side
    13,807.92x = 143,298,333.78
  5. Step 5: Solve for x
    x = 143,298,333.78/13,807.92
  6. Step 6: Final answer
    x = 10,377.98

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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.