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Finding the Fourth Proportional to 13,202,497.20, 19,803,745.80 and 12,724,200.30

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Solution

The fourth proportional to 13,202,497.20, 19,803,745.80 and 12,724,200.30 is: 19,086,300.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,202,497.20 : 19,803,745.80 = 12,724,200.30 : x
  2. Step 2: Convert to fraction form
    13,202,497.20/19,803,745.80 = 12,724,200.30/x
  3. Step 3: Cross multiply
    13,202,497.20x = 19,803,745.80 × 12,724,200.30
  4. Step 4: Simplify right side
    13,202,497.20x = 251,986,828,249,483.75
  5. Step 5: Solve for x
    x = 251,986,828,249,483.75/13,202,497.20
  6. Step 6: Final answer
    x = 19,086,300.45

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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.