Home / 13,219.48-19,802.22-7,379.20

Finding the Fourth Proportional to 13,219.48, 19,802.22 and 7,379.20

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Solution

The fourth proportional to 13,219.48, 19,802.22 and 7,379.20 is: 11,053.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.48 : 19,802.22 = 7,379.20 : x
  2. Step 2: Convert to fraction form
    13,219.48/19,802.22 = 7,379.20/x
  3. Step 3: Cross multiply
    13,219.48x = 19,802.22 × 7,379.20
  4. Step 4: Simplify right side
    13,219.48x = 146,124,541.82
  5. Step 5: Solve for x
    x = 146,124,541.82/13,219.48
  6. Step 6: Final answer
    x = 11,053.73

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1.5x scale

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.