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Finding the Fourth Proportional to 13,773,478.40, 20,635,334.40 and 11,782,822.40

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Solution

The fourth proportional to 13,773,478.40, 20,635,334.40 and 11,782,822.40 is: 17,652,946.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,773,478.40 : 20,635,334.40 = 11,782,822.40 : x
  2. Step 2: Convert to fraction form
    13,773,478.40/20,635,334.40 = 11,782,822.40/x
  3. Step 3: Cross multiply
    13,773,478.40x = 20,635,334.40 × 11,782,822.40
  4. Step 4: Simplify right side
    13,773,478.40x = 243,142,480,399,810.56
  5. Step 5: Solve for x
    x = 243,142,480,399,810.56/13,773,478.40
  6. Step 6: Final answer
    x = 17,652,946.72

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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.