Home / 20,386,071.70-28,132,782.81-11,218,714.45

Finding the Fourth Proportional to 20,386,071.70, 28,132,782.81 and 11,218,714.45

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Solution

The fourth proportional to 20,386,071.70, 28,132,782.81 and 11,218,714.45 is: 15,481,828.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,071.70 : 28,132,782.81 = 11,218,714.45 : x
  2. Step 2: Convert to fraction form
    20,386,071.70/28,132,782.81 = 11,218,714.45/x
  3. Step 3: Cross multiply
    20,386,071.70x = 28,132,782.81 × 11,218,714.45
  4. Step 4: Simplify right side
    20,386,071.70x = 315,613,656,916,856.44
  5. Step 5: Solve for x
    x = 315,613,656,916,856.44/20,386,071.70
  6. Step 6: Final answer
    x = 15,481,828.06

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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.