Home / 12,478,712.40-18,680,743.80-11,740,510.80

Finding the Fourth Proportional to 12,478,712.40, 18,680,743.80 and 11,740,510.80

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Solution

The fourth proportional to 12,478,712.40, 18,680,743.80 and 11,740,510.80 is: 17,575,649.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,712.40 : 18,680,743.80 = 11,740,510.80 : x
  2. Step 2: Convert to fraction form
    12,478,712.40/18,680,743.80 = 11,740,510.80/x
  3. Step 3: Cross multiply
    12,478,712.40x = 18,680,743.80 × 11,740,510.80
  4. Step 4: Simplify right side
    12,478,712.40x = 219,321,474,335,933.06
  5. Step 5: Solve for x
    x = 219,321,474,335,933.06/12,478,712.40
  6. Step 6: Final answer
    x = 17,575,649.42

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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.