Home / 20,538,041.30-28,343,260.53-11,718,928.40

Finding the Fourth Proportional to 20,538,041.30, 28,343,260.53 and 11,718,928.40

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Solution

The fourth proportional to 20,538,041.30, 28,343,260.53 and 11,718,928.40 is: 16,172,556.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538,041.30 : 28,343,260.53 = 11,718,928.40 : x
  2. Step 2: Convert to fraction form
    20,538,041.30/28,343,260.53 = 11,718,928.40/x
  3. Step 3: Cross multiply
    20,538,041.30x = 28,343,260.53 × 11,718,928.40
  4. Step 4: Simplify right side
    20,538,041.30x = 332,152,640,631,899.75
  5. Step 5: Solve for x
    x = 332,152,640,631,899.75/20,538,041.30
  6. Step 6: Final answer
    x = 16,172,556.86

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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.