Home / 28,939.10-39,927.08-18,863.87

Finding the Fourth Proportional to 28,939.10, 39,927.08 and 18,863.87

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Solution

The fourth proportional to 28,939.10, 39,927.08 and 18,863.87 is: 26,026.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,939.10 : 39,927.08 = 18,863.87 : x
  2. Step 2: Convert to fraction form
    28,939.10/39,927.08 = 18,863.87/x
  3. Step 3: Cross multiply
    28,939.10x = 39,927.08 × 18,863.87
  4. Step 4: Simplify right side
    28,939.10x = 753,179,094.12
  5. Step 5: Solve for x
    x = 753,179,094.12/28,939.10
  6. Step 6: Final answer
    x = 26,026.35

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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.