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Finding the Fourth Proportional to 18,411,978.98, 27,616,967.01 and 5,632,483.64

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Solution

The fourth proportional to 18,411,978.98, 27,616,967.01 and 5,632,483.64 is: 8,448,419.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,411,978.98 : 27,616,967.01 = 5,632,483.64 : x
  2. Step 2: Convert to fraction form
    18,411,978.98/27,616,967.01 = 5,632,483.64/x
  3. Step 3: Cross multiply
    18,411,978.98x = 27,616,967.01 × 5,632,483.64
  4. Step 4: Simplify right side
    18,411,978.98x = 155,552,114,732,159.88
  5. Step 5: Solve for x
    x = 155,552,114,732,159.88/18,411,978.98
  6. Step 6: Final answer
    x = 8,448,419.09

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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.