Home / 20,591,328.85-28,416,042.81-11,423,971.60

Finding the Fourth Proportional to 20,591,328.85, 28,416,042.81 and 11,423,971.60

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Solution

The fourth proportional to 20,591,328.85, 28,416,042.81 and 11,423,971.60 is: 15,765,085.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591,328.85 : 28,416,042.81 = 11,423,971.60 : x
  2. Step 2: Convert to fraction form
    20,591,328.85/28,416,042.81 = 11,423,971.60/x
  3. Step 3: Cross multiply
    20,591,328.85x = 28,416,042.81 × 11,423,971.60
  4. Step 4: Simplify right side
    20,591,328.85x = 324,624,065,974,784.06
  5. Step 5: Solve for x
    x = 324,624,065,974,784.06/20,591,328.85
  6. Step 6: Final answer
    x = 15,765,085.80

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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.