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Finding the Fourth Proportional to 18,648,672.48, 25,736,356.80 and 11,307,208.32

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Solution

The fourth proportional to 18,648,672.48, 25,736,356.80 and 11,307,208.32 is: 15,604,668.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,648,672.48 : 25,736,356.80 = 11,307,208.32 : x
  2. Step 2: Convert to fraction form
    18,648,672.48/25,736,356.80 = 11,307,208.32/x
  3. Step 3: Cross multiply
    18,648,672.48x = 25,736,356.80 × 11,307,208.32
  4. Step 4: Simplify right side
    18,648,672.48x = 291,006,347,735,448.56
  5. Step 5: Solve for x
    x = 291,006,347,735,448.56/18,648,672.48
  6. Step 6: Final answer
    x = 15,604,668.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.