Home / 19,821.64-27,353.85-10,869.29

Finding the Fourth Proportional to 19,821.64, 27,353.85 and 10,869.29

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Solution

The fourth proportional to 19,821.64, 27,353.85 and 10,869.29 is: 14,999.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,821.64 : 27,353.85 = 10,869.29 : x
  2. Step 2: Convert to fraction form
    19,821.64/27,353.85 = 10,869.29/x
  3. Step 3: Cross multiply
    19,821.64x = 27,353.85 × 10,869.29
  4. Step 4: Simplify right side
    19,821.64x = 297,316,750.74
  5. Step 5: Solve for x
    x = 297,316,750.74/19,821.64
  6. Step 6: Final answer
    x = 14,999.61

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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.