Home / 15,085,475.90-20,820,150.41-8,470,806.92

Finding the Fourth Proportional to 15,085,475.90, 20,820,150.41 and 8,470,806.92

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Solution

The fourth proportional to 15,085,475.90, 20,820,150.41 and 8,470,806.92 is: 11,690,945.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085,475.90 : 20,820,150.41 = 8,470,806.92 : x
  2. Step 2: Convert to fraction form
    15,085,475.90/20,820,150.41 = 8,470,806.92/x
  3. Step 3: Cross multiply
    15,085,475.90x = 20,820,150.41 × 8,470,806.92
  4. Step 4: Simplify right side
    15,085,475.90x = 176,363,474,022,014.03
  5. Step 5: Solve for x
    x = 176,363,474,022,014.03/15,085,475.90
  6. Step 6: Final answer
    x = 11,690,945.33

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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.