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Finding the Fourth Proportional to 15,751,978.70, 23,627,968.05 and 9,358,940.30

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Solution

The fourth proportional to 15,751,978.70, 23,627,968.05 and 9,358,940.30 is: 14,038,410.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,751,978.70 : 23,627,968.05 = 9,358,940.30 : x
  2. Step 2: Convert to fraction form
    15,751,978.70/23,627,968.05 = 9,358,940.30/x
  3. Step 3: Cross multiply
    15,751,978.70x = 23,627,968.05 × 9,358,940.30
  4. Step 4: Simplify right side
    15,751,978.70x = 221,132,742,390,257.44
  5. Step 5: Solve for x
    x = 221,132,742,390,257.44/15,751,978.70
  6. Step 6: Final answer
    x = 14,038,410.45

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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.