Home / 19,712.46-27,203.16-12,638.88

Finding the Fourth Proportional to 19,712.46, 27,203.16 and 12,638.88

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Solution

The fourth proportional to 19,712.46, 27,203.16 and 12,638.88 is: 17,441.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,712.46 : 27,203.16 = 12,638.88 : x
  2. Step 2: Convert to fraction form
    19,712.46/27,203.16 = 12,638.88/x
  3. Step 3: Cross multiply
    19,712.46x = 27,203.16 × 12,638.88
  4. Step 4: Simplify right side
    19,712.46x = 343,817,474.86
  5. Step 5: Solve for x
    x = 343,817,474.86/19,712.46
  6. Step 6: Final answer
    x = 17,441.63

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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.