Home / 21,859.34-30,166.16-12,427.88

Finding the Fourth Proportional to 21,859.34, 30,166.16 and 12,427.88

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Solution

The fourth proportional to 21,859.34, 30,166.16 and 12,427.88 is: 17,150.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,859.34 : 30,166.16 = 12,427.88 : x
  2. Step 2: Convert to fraction form
    21,859.34/30,166.16 = 12,427.88/x
  3. Step 3: Cross multiply
    21,859.34x = 30,166.16 × 12,427.88
  4. Step 4: Simplify right side
    21,859.34x = 374,901,203.57
  5. Step 5: Solve for x
    x = 374,901,203.57/21,859.34
  6. Step 6: Final answer
    x = 17,150.62

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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.