Home / 20,386,071.48-28,132,782.74-11,218,714.23

Finding the Fourth Proportional to 20,386,071.48, 28,132,782.74 and 11,218,714.23

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Solution

The fourth proportional to 20,386,071.48, 28,132,782.74 and 11,218,714.23 is: 15,481,827.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,071.48 : 28,132,782.74 = 11,218,714.23 : x
  2. Step 2: Convert to fraction form
    20,386,071.48/28,132,782.74 = 11,218,714.23/x
  3. Step 3: Cross multiply
    20,386,071.48x = 28,132,782.74 × 11,218,714.23
  4. Step 4: Simplify right side
    20,386,071.48x = 315,613,650,054,736.38
  5. Step 5: Solve for x
    x = 315,613,650,054,736.38/20,386,071.48
  6. Step 6: Final answer
    x = 15,481,827.89

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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.