Home / 19,859,789.20-29,789,683.80-7,729,812.40

Finding the Fourth Proportional to 19,859,789.20, 29,789,683.80 and 7,729,812.40

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Solution

The fourth proportional to 19,859,789.20, 29,789,683.80 and 7,729,812.40 is: 11,594,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,859,789.20 : 29,789,683.80 = 7,729,812.40 : x
  2. Step 2: Convert to fraction form
    19,859,789.20/29,789,683.80 = 7,729,812.40/x
  3. Step 3: Cross multiply
    19,859,789.20x = 29,789,683.80 × 7,729,812.40
  4. Step 4: Simplify right side
    19,859,789.20x = 230,268,667,229,319.12
  5. Step 5: Solve for x
    x = 230,268,667,229,319.12/19,859,789.20
  6. Step 6: Final answer
    x = 11,594,718.60

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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.