Home / 13,127.52-19,699.80-7,858.56

Finding the Fourth Proportional to 13,127.52, 19,699.80 and 7,858.56

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Solution

The fourth proportional to 13,127.52, 19,699.80 and 7,858.56 is: 11,792.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.52 : 19,699.80 = 7,858.56 : x
  2. Step 2: Convert to fraction form
    13,127.52/19,699.80 = 7,858.56/x
  3. Step 3: Cross multiply
    13,127.52x = 19,699.80 × 7,858.56
  4. Step 4: Simplify right side
    13,127.52x = 154,812,060.29
  5. Step 5: Solve for x
    x = 154,812,060.29/13,127.52
  6. Step 6: Final answer
    x = 11,792.94

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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.