Home / 19,419,320.40-29,128,980.60-7,288,760.40

Finding the Fourth Proportional to 19,419,320.40, 29,128,980.60 and 7,288,760.40

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Solution

The fourth proportional to 19,419,320.40, 29,128,980.60 and 7,288,760.40 is: 10,933,140.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,419,320.40 : 29,128,980.60 = 7,288,760.40 : x
  2. Step 2: Convert to fraction form
    19,419,320.40/29,128,980.60 = 7,288,760.40/x
  3. Step 3: Cross multiply
    19,419,320.40x = 29,128,980.60 × 7,288,760.40
  4. Step 4: Simplify right side
    19,419,320.40x = 212,314,160,289,648.25
  5. Step 5: Solve for x
    x = 212,314,160,289,648.25/19,419,320.40
  6. Step 6: Final answer
    x = 10,933,140.60

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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.