Home / 21,038.10-29,157.96-20,644.44

Finding the Fourth Proportional to 21,038.10, 29,157.96 and 20,644.44

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Solution

The fourth proportional to 21,038.10, 29,157.96 and 20,644.44 is: 28,612.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038.10 : 29,157.96 = 20,644.44 : x
  2. Step 2: Convert to fraction form
    21,038.10/29,157.96 = 20,644.44/x
  3. Step 3: Cross multiply
    21,038.10x = 29,157.96 × 20,644.44
  4. Step 4: Simplify right side
    21,038.10x = 601,949,755.74
  5. Step 5: Solve for x
    x = 601,949,755.74/21,038.10
  6. Step 6: Final answer
    x = 28,612.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.