Home / 20,358,036.90-28,107,619.18-15,640,029.43

Finding the Fourth Proportional to 20,358,036.90, 28,107,619.18 and 15,640,029.43

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Solution

The fourth proportional to 20,358,036.90, 28,107,619.18 and 15,640,029.43 is: 21,593,633.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358,036.90 : 28,107,619.18 = 15,640,029.43 : x
  2. Step 2: Convert to fraction form
    20,358,036.90/28,107,619.18 = 15,640,029.43/x
  3. Step 3: Cross multiply
    20,358,036.90x = 28,107,619.18 × 15,640,029.43
  4. Step 4: Simplify right side
    20,358,036.90x = 439,603,991,073,063.31
  5. Step 5: Solve for x
    x = 439,603,991,073,063.31/20,358,036.90
  6. Step 6: Final answer
    x = 21,593,633.67

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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.