Home / 21,589.39-29,793.37-12,638.63

Finding the Fourth Proportional to 21,589.39, 29,793.37 and 12,638.63

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Solution

The fourth proportional to 21,589.39, 29,793.37 and 12,638.63 is: 17,441.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,589.39 : 29,793.37 = 12,638.63 : x
  2. Step 2: Convert to fraction form
    21,589.39/29,793.37 = 12,638.63/x
  3. Step 3: Cross multiply
    21,589.39x = 29,793.37 × 12,638.63
  4. Step 4: Simplify right side
    21,589.39x = 376,547,446.47
  5. Step 5: Solve for x
    x = 376,547,446.47/21,589.39
  6. Step 6: Final answer
    x = 17,441.32

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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.