Home / 20,390,036.90-28,138,249.32-11,097,673.55

Finding the Fourth Proportional to 20,390,036.90, 28,138,249.32 and 11,097,673.55

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Solution

The fourth proportional to 20,390,036.90, 28,138,249.32 and 11,097,673.55 is: 15,314,788.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390,036.90 : 28,138,249.32 = 11,097,673.55 : x
  2. Step 2: Convert to fraction form
    20,390,036.90/28,138,249.32 = 11,097,673.55/x
  3. Step 3: Cross multiply
    20,390,036.90x = 28,138,249.32 × 11,097,673.55
  4. Step 4: Simplify right side
    20,390,036.90x = 312,269,105,221,869.50
  5. Step 5: Solve for x
    x = 312,269,105,221,869.50/20,390,036.90
  6. Step 6: Final answer
    x = 15,314,788.63

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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.