Home / 28,081,621.48-38,751,894.28-15,691,816.72

Finding the Fourth Proportional to 28,081,621.48, 38,751,894.28 and 15,691,816.72

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Solution

The fourth proportional to 28,081,621.48, 38,751,894.28 and 15,691,816.72 is: 21,654,291.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081,621.48 : 38,751,894.28 = 15,691,816.72 : x
  2. Step 2: Convert to fraction form
    28,081,621.48/38,751,894.28 = 15,691,816.72/x
  3. Step 3: Cross multiply
    28,081,621.48x = 38,751,894.28 × 15,691,816.72
  4. Step 4: Simplify right side
    28,081,621.48x = 608,087,622,594,576.38
  5. Step 5: Solve for x
    x = 608,087,622,594,576.38/28,081,621.48
  6. Step 6: Final answer
    x = 21,654,291.69

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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.