Home / 28,161,979.44-38,856,870.90-15,938,836.44

Finding the Fourth Proportional to 28,161,979.44, 38,856,870.90 and 15,938,836.44

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Solution

The fourth proportional to 28,161,979.44, 38,856,870.90 and 15,938,836.44 is: 21,991,824.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161,979.44 : 38,856,870.90 = 15,938,836.44 : x
  2. Step 2: Convert to fraction form
    28,161,979.44/38,856,870.90 = 15,938,836.44/x
  3. Step 3: Cross multiply
    28,161,979.44x = 38,856,870.90 × 15,938,836.44
  4. Step 4: Simplify right side
    28,161,979.44x = 619,333,309,845,295.50
  5. Step 5: Solve for x
    x = 619,333,309,845,295.50/28,161,979.44
  6. Step 6: Final answer
    x = 21,991,824.52

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1.5x scale

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.