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Finding the Fourth Proportional to 13,608,946.40, 20,392,424.40 and 11,803,359.20

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Solution

The fourth proportional to 13,608,946.40, 20,392,424.40 and 11,803,359.20 is: 17,686,829.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608,946.40 : 20,392,424.40 = 11,803,359.20 : x
  2. Step 2: Convert to fraction form
    13,608,946.40/20,392,424.40 = 11,803,359.20/x
  3. Step 3: Cross multiply
    13,608,946.40x = 20,392,424.40 × 11,803,359.20
  4. Step 4: Simplify right side
    13,608,946.40x = 240,699,110,152,044.44
  5. Step 5: Solve for x
    x = 240,699,110,152,044.44/13,608,946.40
  6. Step 6: Final answer
    x = 17,686,829.17

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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.