Home / 21,243,816.80-31,865,676.60-9,105,409.52

Finding the Fourth Proportional to 21,243,816.80, 31,865,676.60 and 9,105,409.52

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Solution

The fourth proportional to 21,243,816.80, 31,865,676.60 and 9,105,409.52 is: 13,658,093.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243,816.80 : 31,865,676.60 = 9,105,409.52 : x
  2. Step 2: Convert to fraction form
    21,243,816.80/31,865,676.60 = 9,105,409.52/x
  3. Step 3: Cross multiply
    21,243,816.80x = 31,865,676.60 × 9,105,409.52
  4. Step 4: Simplify right side
    21,243,816.80x = 290,150,035,074,881.25
  5. Step 5: Solve for x
    x = 290,150,035,074,881.25/21,243,816.80
  6. Step 6: Final answer
    x = 13,658,093.45

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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.