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Finding the Fourth Proportional to 13,596,043.20, 20,394,064.80 and 12,357,412.80

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Solution

The fourth proportional to 13,596,043.20, 20,394,064.80 and 12,357,412.80 is: 18,536,119.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,596,043.20 : 20,394,064.80 = 12,357,412.80 : x
  2. Step 2: Convert to fraction form
    13,596,043.20/20,394,064.80 = 12,357,412.80/x
  3. Step 3: Cross multiply
    13,596,043.20x = 20,394,064.80 × 12,357,412.80
  4. Step 4: Simplify right side
    13,596,043.20x = 252,017,877,403,549.47
  5. Step 5: Solve for x
    x = 252,017,877,403,549.47/13,596,043.20
  6. Step 6: Final answer
    x = 18,536,119.20

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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.