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Finding the Fourth Proportional to 18,902,271.72, 28,353,407.58 and 18,902,271.72

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Solution

The fourth proportional to 18,902,271.72, 28,353,407.58 and 18,902,271.72 is: 28,353,407.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902,271.72 : 28,353,407.58 = 18,902,271.72 : x
  2. Step 2: Convert to fraction form
    18,902,271.72/28,353,407.58 = 18,902,271.72/x
  3. Step 3: Cross multiply
    18,902,271.72x = 28,353,407.58 × 18,902,271.72
  4. Step 4: Simplify right side
    18,902,271.72x = 535,943,814,028,789.25
  5. Step 5: Solve for x
    x = 535,943,814,028,789.25/18,902,271.72
  6. Step 6: Final answer
    x = 28,353,407.58

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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.