Home / 20,558,878.15-28,371,285.20-11,264,971.36

Finding the Fourth Proportional to 20,558,878.15, 28,371,285.20 and 11,264,971.36

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Solution

The fourth proportional to 20,558,878.15, 28,371,285.20 and 11,264,971.36 is: 15,545,678.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558,878.15 : 28,371,285.20 = 11,264,971.36 : x
  2. Step 2: Convert to fraction form
    20,558,878.15/28,371,285.20 = 11,264,971.36/x
  3. Step 3: Cross multiply
    20,558,878.15x = 28,371,285.20 × 11,264,971.36
  4. Step 4: Simplify right side
    20,558,878.15x = 319,601,715,097,138.81
  5. Step 5: Solve for x
    x = 319,601,715,097,138.81/20,558,878.15
  6. Step 6: Final answer
    x = 15,545,678.75

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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.