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Finding the Fourth Proportional to 15,892.62, 21,939.06 and 10,864.98

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Solution

The fourth proportional to 15,892.62, 21,939.06 and 10,864.98 is: 14,998.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,892.62 : 21,939.06 = 10,864.98 : x
  2. Step 2: Convert to fraction form
    15,892.62/21,939.06 = 10,864.98/x
  3. Step 3: Cross multiply
    15,892.62x = 21,939.06 × 10,864.98
  4. Step 4: Simplify right side
    15,892.62x = 238,367,448.12
  5. Step 5: Solve for x
    x = 238,367,448.12/15,892.62
  6. Step 6: Final answer
    x = 14,998.63

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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.