Home / 13,119.78-19,679.94-5,323.26

Finding the Fourth Proportional to 13,119.78, 19,679.94 and 5,323.26

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Solution

The fourth proportional to 13,119.78, 19,679.94 and 5,323.26 is: 7,985.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.78 : 19,679.94 = 5,323.26 : x
  2. Step 2: Convert to fraction form
    13,119.78/19,679.94 = 5,323.26/x
  3. Step 3: Cross multiply
    13,119.78x = 19,679.94 × 5,323.26
  4. Step 4: Simplify right side
    13,119.78x = 104,761,437.40
  5. Step 5: Solve for x
    x = 104,761,437.40/13,119.78
  6. Step 6: Final answer
    x = 7,985.00

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1.5x scale

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.