Home / 19,944.40-29,940.90-10,078.60

Finding the Fourth Proportional to 19,944.40, 29,940.90 and 10,078.60

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Solution

The fourth proportional to 19,944.40, 29,940.90 and 10,078.60 is: 15,130.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,944.40 : 29,940.90 = 10,078.60 : x
  2. Step 2: Convert to fraction form
    19,944.40/29,940.90 = 10,078.60/x
  3. Step 3: Cross multiply
    19,944.40x = 29,940.90 × 10,078.60
  4. Step 4: Simplify right side
    19,944.40x = 301,762,354.74
  5. Step 5: Solve for x
    x = 301,762,354.74/19,944.40
  6. Step 6: Final answer
    x = 15,130.18

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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.