Home / 19,911.19-29,835.77-7,427.84

Finding the Fourth Proportional to 19,911.19, 29,835.77 and 7,427.84

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Solution

The fourth proportional to 19,911.19, 29,835.77 and 7,427.84 is: 11,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,911.19 : 29,835.77 = 7,427.84 : x
  2. Step 2: Convert to fraction form
    19,911.19/29,835.77 = 7,427.84/x
  3. Step 3: Cross multiply
    19,911.19x = 29,835.77 × 7,427.84
  4. Step 4: Simplify right side
    19,911.19x = 221,615,325.84
  5. Step 5: Solve for x
    x = 221,615,325.84/19,911.19
  6. Step 6: Final answer
    x = 11,130.19

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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.