Home / 20,658,466.80-30,961,128.15-12,562,848.90

Finding the Fourth Proportional to 20,658,466.80, 30,961,128.15 and 12,562,848.90

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Solution

The fourth proportional to 20,658,466.80, 30,961,128.15 and 12,562,848.90 is: 18,828,114.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658,466.80 : 30,961,128.15 = 12,562,848.90 : x
  2. Step 2: Convert to fraction form
    20,658,466.80/30,961,128.15 = 12,562,848.90/x
  3. Step 3: Cross multiply
    20,658,466.80x = 30,961,128.15 × 12,562,848.90
  4. Step 4: Simplify right side
    20,658,466.80x = 388,959,974,721,986.50
  5. Step 5: Solve for x
    x = 388,959,974,721,986.50/20,658,466.80
  6. Step 6: Final answer
    x = 18,828,114.33

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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.