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Finding the Fourth Proportional to 15,804.40, 23,741.80 and 13,212.40

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Solution

The fourth proportional to 15,804.40, 23,741.80 and 13,212.40 is: 19,848.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,804.40 : 23,741.80 = 13,212.40 : x
  2. Step 2: Convert to fraction form
    15,804.40/23,741.80 = 13,212.40/x
  3. Step 3: Cross multiply
    15,804.40x = 23,741.80 × 13,212.40
  4. Step 4: Simplify right side
    15,804.40x = 313,686,158.32
  5. Step 5: Solve for x
    x = 313,686,158.32/15,804.40
  6. Step 6: Final answer
    x = 19,848.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.