Home / 13,020.09-19,529.95-3,159.45

Finding the Fourth Proportional to 13,020.09, 19,529.95 and 3,159.45

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Solution

The fourth proportional to 13,020.09, 19,529.95 and 3,159.45 is: 4,739.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.09 : 19,529.95 = 3,159.45 : x
  2. Step 2: Convert to fraction form
    13,020.09/19,529.95 = 3,159.45/x
  3. Step 3: Cross multiply
    13,020.09x = 19,529.95 × 3,159.45
  4. Step 4: Simplify right side
    13,020.09x = 61,703,900.53
  5. Step 5: Solve for x
    x = 61,703,900.53/13,020.09
  6. Step 6: Final answer
    x = 4,739.13

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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.