Home / 15,639.82-21,593-13,958.34

Finding the Fourth Proportional to 15,639.82, 21,593 and 13,958.34

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Solution

The fourth proportional to 15,639.82, 21,593 and 13,958.34 is: 19,271.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.82 : 21,593 = 13,958.34 : x
  2. Step 2: Convert to fraction form
    15,639.82/21,593 = 13,958.34/x
  3. Step 3: Cross multiply
    15,639.82x = 21,593 × 13,958.34
  4. Step 4: Simplify right side
    15,639.82x = 301,402,435.62
  5. Step 5: Solve for x
    x = 301,402,435.62/15,639.82
  6. Step 6: Final answer
    x = 19,271.48

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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.