Home / 13,147,220.40-19,720,830.60-11,131,681.20

Finding the Fourth Proportional to 13,147,220.40, 19,720,830.60 and 11,131,681.20

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Solution

The fourth proportional to 13,147,220.40, 19,720,830.60 and 11,131,681.20 is: 16,697,521.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147,220.40 : 19,720,830.60 = 11,131,681.20 : x
  2. Step 2: Convert to fraction form
    13,147,220.40/19,720,830.60 = 11,131,681.20/x
  3. Step 3: Cross multiply
    13,147,220.40x = 19,720,830.60 × 11,131,681.20
  4. Step 4: Simplify right side
    13,147,220.40x = 219,525,999,238,404.72
  5. Step 5: Solve for x
    x = 219,525,999,238,404.72/13,147,220.40
  6. Step 6: Final answer
    x = 16,697,521.80

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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.