Home / 13,319,220-18,380,539.86-7,207,648.56

Finding the Fourth Proportional to 13,319,220, 18,380,539.86 and 7,207,648.56

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Solution

The fourth proportional to 13,319,220, 18,380,539.86 and 7,207,648.56 is: 9,946,563.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319,220 : 18,380,539.86 = 7,207,648.56 : x
  2. Step 2: Convert to fraction form
    13,319,220/18,380,539.86 = 7,207,648.56/x
  3. Step 3: Cross multiply
    13,319,220x = 18,380,539.86 × 7,207,648.56
  4. Step 4: Simplify right side
    13,319,220x = 132,480,471,653,951.59
  5. Step 5: Solve for x
    x = 132,480,471,653,951.59/13,319,220
  6. Step 6: Final answer
    x = 9,946,563.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.