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Finding the Fourth Proportional to 19,804.70, 27,330.47 and 11,848.79

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Solution

The fourth proportional to 19,804.70, 27,330.47 and 11,848.79 is: 16,351.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,804.70 : 27,330.47 = 11,848.79 : x
  2. Step 2: Convert to fraction form
    19,804.70/27,330.47 = 11,848.79/x
  3. Step 3: Cross multiply
    19,804.70x = 27,330.47 × 11,848.79
  4. Step 4: Simplify right side
    19,804.70x = 323,832,999.63
  5. Step 5: Solve for x
    x = 323,832,999.63/19,804.70
  6. Step 6: Final answer
    x = 16,351.32

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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.