Home / 13,020.17-19,530.37-3,159.53

Finding the Fourth Proportional to 13,020.17, 19,530.37 and 3,159.53

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Solution

The fourth proportional to 13,020.17, 19,530.37 and 3,159.53 is: 4,739.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.17 : 19,530.37 = 3,159.53 : x
  2. Step 2: Convert to fraction form
    13,020.17/19,530.37 = 3,159.53/x
  3. Step 3: Cross multiply
    13,020.17x = 19,530.37 × 3,159.53
  4. Step 4: Simplify right side
    13,020.17x = 61,706,806.62
  5. Step 5: Solve for x
    x = 61,706,806.62/13,020.17
  6. Step 6: Final answer
    x = 4,739.32

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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.