Home / 15,083,681.18-20,815,914.21-8,208,598.82

Finding the Fourth Proportional to 15,083,681.18, 20,815,914.21 and 8,208,598.82

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Solution

The fourth proportional to 15,083,681.18, 20,815,914.21 and 8,208,598.82 is: 11,328,102.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,083,681.18 : 20,815,914.21 = 8,208,598.82 : x
  2. Step 2: Convert to fraction form
    15,083,681.18/20,815,914.21 = 8,208,598.82/x
  3. Step 3: Cross multiply
    15,083,681.18x = 20,815,914.21 × 8,208,598.82
  4. Step 4: Simplify right side
    15,083,681.18x = 170,869,488,821,427.25
  5. Step 5: Solve for x
    x = 170,869,488,821,427.25/15,083,681.18
  6. Step 6: Final answer
    x = 11,328,102.65

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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.