Home / 15,622.92-21,494.16-13,638.06

Finding the Fourth Proportional to 15,622.92, 21,494.16 and 13,638.06

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Solution

The fourth proportional to 15,622.92, 21,494.16 and 13,638.06 is: 18,763.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,622.92 : 21,494.16 = 13,638.06 : x
  2. Step 2: Convert to fraction form
    15,622.92/21,494.16 = 13,638.06/x
  3. Step 3: Cross multiply
    15,622.92x = 21,494.16 × 13,638.06
  4. Step 4: Simplify right side
    15,622.92x = 293,138,643.73
  5. Step 5: Solve for x
    x = 293,138,643.73/15,622.92
  6. Step 6: Final answer
    x = 18,763.37

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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.