Home / 20,112,102.40-30,168,153.60-18,677,211.70

Finding the Fourth Proportional to 20,112,102.40, 30,168,153.60 and 18,677,211.70

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Solution

The fourth proportional to 20,112,102.40, 30,168,153.60 and 18,677,211.70 is: 28,015,817.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112,102.40 : 30,168,153.60 = 18,677,211.70 : x
  2. Step 2: Convert to fraction form
    20,112,102.40/30,168,153.60 = 18,677,211.70/x
  3. Step 3: Cross multiply
    20,112,102.40x = 30,168,153.60 × 18,677,211.70
  4. Step 4: Simplify right side
    20,112,102.40x = 563,456,991,385,317.12
  5. Step 5: Solve for x
    x = 563,456,991,385,317.12/20,112,102.40
  6. Step 6: Final answer
    x = 28,015,817.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.