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Finding the Fourth Proportional to 14,581,989.60, 21,841,491.60 and 12,692,421.60

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Solution

The fourth proportional to 14,581,989.60, 21,841,491.60 and 12,692,421.60 is: 19,011,220.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,581,989.60 : 21,841,491.60 = 12,692,421.60 : x
  2. Step 2: Convert to fraction form
    14,581,989.60/21,841,491.60 = 12,692,421.60/x
  3. Step 3: Cross multiply
    14,581,989.60x = 21,841,491.60 × 12,692,421.60
  4. Step 4: Simplify right side
    14,581,989.60x = 277,221,419,760,058.56
  5. Step 5: Solve for x
    x = 277,221,419,760,058.56/14,581,989.60
  6. Step 6: Final answer
    x = 19,011,220.51

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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.