Home / 13,147.17-19,721.70-4,140.51

Finding the Fourth Proportional to 13,147.17, 19,721.70 and 4,140.51

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Solution

The fourth proportional to 13,147.17, 19,721.70 and 4,140.51 is: 6,211.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.17 : 19,721.70 = 4,140.51 : x
  2. Step 2: Convert to fraction form
    13,147.17/19,721.70 = 4,140.51/x
  3. Step 3: Cross multiply
    13,147.17x = 19,721.70 × 4,140.51
  4. Step 4: Simplify right side
    13,147.17x = 81,657,896.07
  5. Step 5: Solve for x
    x = 81,657,896.07/13,147.17
  6. Step 6: Final answer
    x = 6,211.06

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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.