Home / 12,820,590.78-17,691,743.43-7,018,261.62

Finding the Fourth Proportional to 12,820,590.78, 17,691,743.43 and 7,018,261.62

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Solution

The fourth proportional to 12,820,590.78, 17,691,743.43 and 7,018,261.62 is: 9,684,833.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,820,590.78 : 17,691,743.43 = 7,018,261.62 : x
  2. Step 2: Convert to fraction form
    12,820,590.78/17,691,743.43 = 7,018,261.62/x
  3. Step 3: Cross multiply
    12,820,590.78x = 17,691,743.43 × 7,018,261.62
  4. Step 4: Simplify right side
    12,820,590.78x = 124,165,283,905,656.16
  5. Step 5: Solve for x
    x = 124,165,283,905,656.16/12,820,590.78
  6. Step 6: Final answer
    x = 9,684,833.25

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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.