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Finding the Fourth Proportional to 21,998, 30,359.16 and 12,063.92

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Solution

The fourth proportional to 21,998, 30,359.16 and 12,063.92 is: 16,649.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998 : 30,359.16 = 12,063.92 : x
  2. Step 2: Convert to fraction form
    21,998/30,359.16 = 12,063.92/x
  3. Step 3: Cross multiply
    21,998x = 30,359.16 × 12,063.92
  4. Step 4: Simplify right side
    21,998x = 366,250,477.51
  5. Step 5: Solve for x
    x = 366,250,477.51/21,998
  6. Step 6: Final answer
    x = 16,649.26

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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.