Home / 28,859,638.86-39,826,323.12-15,628,918.50

Finding the Fourth Proportional to 28,859,638.86, 39,826,323.12 and 15,628,918.50

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Solution

The fourth proportional to 28,859,638.86, 39,826,323.12 and 15,628,918.50 is: 21,567,919.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,859,638.86 : 39,826,323.12 = 15,628,918.50 : x
  2. Step 2: Convert to fraction form
    28,859,638.86/39,826,323.12 = 15,628,918.50/x
  3. Step 3: Cross multiply
    28,859,638.86x = 39,826,323.12 × 15,628,918.50
  4. Step 4: Simplify right side
    28,859,638.86x = 622,442,358,197,145.62
  5. Step 5: Solve for x
    x = 622,442,358,197,145.62/28,859,638.86
  6. Step 6: Final answer
    x = 21,567,919.17

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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.