Home / 19,409.83-29,116.67-7,720.31

Finding the Fourth Proportional to 19,409.83, 29,116.67 and 7,720.31

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Solution

The fourth proportional to 19,409.83, 29,116.67 and 7,720.31 is: 11,581.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,409.83 : 29,116.67 = 7,720.31 : x
  2. Step 2: Convert to fraction form
    19,409.83/29,116.67 = 7,720.31/x
  3. Step 3: Cross multiply
    19,409.83x = 29,116.67 × 7,720.31
  4. Step 4: Simplify right side
    19,409.83x = 224,789,752.76
  5. Step 5: Solve for x
    x = 224,789,752.76/19,409.83
  6. Step 6: Final answer
    x = 11,581.23

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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.