Home / 13,130.65-19,699.22-4,815.19

Finding the Fourth Proportional to 13,130.65, 19,699.22 and 4,815.19

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Solution

The fourth proportional to 13,130.65, 19,699.22 and 4,815.19 is: 7,223.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.65 : 19,699.22 = 4,815.19 : x
  2. Step 2: Convert to fraction form
    13,130.65/19,699.22 = 4,815.19/x
  3. Step 3: Cross multiply
    13,130.65x = 19,699.22 × 4,815.19
  4. Step 4: Simplify right side
    13,130.65x = 94,855,487.15
  5. Step 5: Solve for x
    x = 94,855,487.15/13,130.65
  6. Step 6: Final answer
    x = 7,223.97

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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.