Home / 18,721,901.60-28,085,962.80-7,362,720.80

Finding the Fourth Proportional to 18,721,901.60, 28,085,962.80 and 7,362,720.80

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Solution

The fourth proportional to 18,721,901.60, 28,085,962.80 and 7,362,720.80 is: 11,045,304.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,901.60 : 28,085,962.80 = 7,362,720.80 : x
  2. Step 2: Convert to fraction form
    18,721,901.60/28,085,962.80 = 7,362,720.80/x
  3. Step 3: Cross multiply
    18,721,901.60x = 28,085,962.80 × 7,362,720.80
  4. Step 4: Simplify right side
    18,721,901.60x = 206,789,102,495,586.25
  5. Step 5: Solve for x
    x = 206,789,102,495,586.25/18,721,901.60
  6. Step 6: Final answer
    x = 11,045,304.42

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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.