Home / 15,808.61-21,805.92-10,137.39

Finding the Fourth Proportional to 15,808.61, 21,805.92 and 10,137.39

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Solution

The fourth proportional to 15,808.61, 21,805.92 and 10,137.39 is: 13,983.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,808.61 : 21,805.92 = 10,137.39 : x
  2. Step 2: Convert to fraction form
    15,808.61/21,805.92 = 10,137.39/x
  3. Step 3: Cross multiply
    15,808.61x = 21,805.92 × 10,137.39
  4. Step 4: Simplify right side
    15,808.61x = 221,055,115.35
  5. Step 5: Solve for x
    x = 221,055,115.35/15,808.61
  6. Step 6: Final answer
    x = 13,983.21

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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.