Home / 13,011.51-19,518.08-5,219.31

Finding the Fourth Proportional to 13,011.51, 19,518.08 and 5,219.31

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Solution

The fourth proportional to 13,011.51, 19,518.08 and 5,219.31 is: 7,829.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,011.51 : 19,518.08 = 5,219.31 : x
  2. Step 2: Convert to fraction form
    13,011.51/19,518.08 = 5,219.31/x
  3. Step 3: Cross multiply
    13,011.51x = 19,518.08 × 5,219.31
  4. Step 4: Simplify right side
    13,011.51x = 101,870,910.12
  5. Step 5: Solve for x
    x = 101,870,910.12/13,011.51
  6. Step 6: Final answer
    x = 7,829.29

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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.