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Finding the Fourth Proportional to 15,752,355, 21,738,269.34 and 8,509,011

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Solution

The fourth proportional to 15,752,355, 21,738,269.34 and 8,509,011 is: 11,742,445.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,752,355 : 21,738,269.34 = 8,509,011 : x
  2. Step 2: Convert to fraction form
    15,752,355/21,738,269.34 = 8,509,011/x
  3. Step 3: Cross multiply
    15,752,355x = 21,738,269.34 × 8,509,011
  4. Step 4: Simplify right side
    15,752,355x = 184,971,172,935,022.75
  5. Step 5: Solve for x
    x = 184,971,172,935,022.75/15,752,355
  6. Step 6: Final answer
    x = 11,742,445.68

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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.