Home / 18,901,905.90-28,334,196.45-9,309,432.30

Finding the Fourth Proportional to 18,901,905.90, 28,334,196.45 and 9,309,432.30

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Solution

The fourth proportional to 18,901,905.90, 28,334,196.45 and 9,309,432.30 is: 13,954,956.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901,905.90 : 28,334,196.45 = 9,309,432.30 : x
  2. Step 2: Convert to fraction form
    18,901,905.90/28,334,196.45 = 9,309,432.30/x
  3. Step 3: Cross multiply
    18,901,905.90x = 28,334,196.45 × 9,309,432.30
  4. Step 4: Simplify right side
    18,901,905.90x = 263,775,283,626,175.34
  5. Step 5: Solve for x
    x = 263,775,283,626,175.34/18,901,905.90
  6. Step 6: Final answer
    x = 13,954,956.98

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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.