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Finding the Fourth Proportional to 29,688.08, 40,979.04 and 19,625.48

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Solution

The fourth proportional to 29,688.08, 40,979.04 and 19,625.48 is: 27,089.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,688.08 : 40,979.04 = 19,625.48 : x
  2. Step 2: Convert to fraction form
    29,688.08/40,979.04 = 19,625.48/x
  3. Step 3: Cross multiply
    29,688.08x = 40,979.04 × 19,625.48
  4. Step 4: Simplify right side
    29,688.08x = 804,233,329.94
  5. Step 5: Solve for x
    x = 804,233,329.94/29,688.08
  6. Step 6: Final answer
    x = 27,089.44

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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.