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Finding the Fourth Proportional to 19,295.88, 29,088.43 and 18,009.94

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Solution

The fourth proportional to 19,295.88, 29,088.43 and 18,009.94 is: 27,149.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,295.88 : 29,088.43 = 18,009.94 : x
  2. Step 2: Convert to fraction form
    19,295.88/29,088.43 = 18,009.94/x
  3. Step 3: Cross multiply
    19,295.88x = 29,088.43 × 18,009.94
  4. Step 4: Simplify right side
    19,295.88x = 523,880,761.25
  5. Step 5: Solve for x
    x = 523,880,761.25/19,295.88
  6. Step 6: Final answer
    x = 27,149.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.