Home / 20,680,631.91-28,538,714.48-11,513,275.47

Finding the Fourth Proportional to 20,680,631.91, 28,538,714.48 and 11,513,275.47

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Solution

The fourth proportional to 20,680,631.91, 28,538,714.48 and 11,513,275.47 is: 15,888,009.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680,631.91 : 28,538,714.48 = 11,513,275.47 : x
  2. Step 2: Convert to fraction form
    20,680,631.91/28,538,714.48 = 11,513,275.47/x
  3. Step 3: Cross multiply
    20,680,631.91x = 28,538,714.48 × 11,513,275.47
  4. Step 4: Simplify right side
    20,680,631.91x = 328,574,081,310,351.44
  5. Step 5: Solve for x
    x = 328,574,081,310,351.44/20,680,631.91
  6. Step 6: Final answer
    x = 15,888,009.74

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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.