Home / 13,285,438.80-19,915,619.40-7,211,216.40

Finding the Fourth Proportional to 13,285,438.80, 19,915,619.40 and 7,211,216.40

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Solution

The fourth proportional to 13,285,438.80, 19,915,619.40 and 7,211,216.40 is: 10,810,018.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285,438.80 : 19,915,619.40 = 7,211,216.40 : x
  2. Step 2: Convert to fraction form
    13,285,438.80/19,915,619.40 = 7,211,216.40/x
  3. Step 3: Cross multiply
    13,285,438.80x = 19,915,619.40 × 7,211,216.40
  4. Step 4: Simplify right side
    13,285,438.80x = 143,615,841,233,438.16
  5. Step 5: Solve for x
    x = 143,615,841,233,438.16/13,285,438.80
  6. Step 6: Final answer
    x = 10,810,018.65

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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.