Home / 13,956.74-19,222.86-12,905.72

Finding the Fourth Proportional to 13,956.74, 19,222.86 and 12,905.72

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Solution

The fourth proportional to 13,956.74, 19,222.86 and 12,905.72 is: 17,775.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,956.74 : 19,222.86 = 12,905.72 : x
  2. Step 2: Convert to fraction form
    13,956.74/19,222.86 = 12,905.72/x
  3. Step 3: Cross multiply
    13,956.74x = 19,222.86 × 12,905.72
  4. Step 4: Simplify right side
    13,956.74x = 248,084,848.76
  5. Step 5: Solve for x
    x = 248,084,848.76/13,956.74
  6. Step 6: Final answer
    x = 17,775.27

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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.