Home / 21,204,987.60-31,820,603.40-8,424,159.60

Finding the Fourth Proportional to 21,204,987.60, 31,820,603.40 and 8,424,159.60

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Solution

The fourth proportional to 21,204,987.60, 31,820,603.40 and 8,424,159.60 is: 12,641,452.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204,987.60 : 31,820,603.40 = 8,424,159.60 : x
  2. Step 2: Convert to fraction form
    21,204,987.60/31,820,603.40 = 8,424,159.60/x
  3. Step 3: Cross multiply
    21,204,987.60x = 31,820,603.40 × 8,424,159.60
  4. Step 4: Simplify right side
    21,204,987.60x = 268,061,841,609,902.62
  5. Step 5: Solve for x
    x = 268,061,841,609,902.62/21,204,987.60
  6. Step 6: Final answer
    x = 12,641,452.41

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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.