Home / 20,638,420.20-30,915,056.70-12,092,855.40

Finding the Fourth Proportional to 20,638,420.20, 30,915,056.70 and 12,092,855.40

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Solution

The fourth proportional to 20,638,420.20, 30,915,056.70 and 12,092,855.40 is: 18,114,337.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,638,420.20 : 30,915,056.70 = 12,092,855.40 : x
  2. Step 2: Convert to fraction form
    20,638,420.20/30,915,056.70 = 12,092,855.40/x
  3. Step 3: Cross multiply
    20,638,420.20x = 30,915,056.70 × 12,092,855.40
  4. Step 4: Simplify right side
    20,638,420.20x = 373,851,310,355,901.19
  5. Step 5: Solve for x
    x = 373,851,310,355,901.19/20,638,420.20
  6. Step 6: Final answer
    x = 18,114,337.57

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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.