Home / 12,355,832.40-18,533,748.60-6,687,128.40

Finding the Fourth Proportional to 12,355,832.40, 18,533,748.60 and 6,687,128.40

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Solution

The fourth proportional to 12,355,832.40, 18,533,748.60 and 6,687,128.40 is: 10,030,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355,832.40 : 18,533,748.60 = 6,687,128.40 : x
  2. Step 2: Convert to fraction form
    12,355,832.40/18,533,748.60 = 6,687,128.40/x
  3. Step 3: Cross multiply
    12,355,832.40x = 18,533,748.60 × 6,687,128.40
  4. Step 4: Simplify right side
    12,355,832.40x = 123,937,556,621,520.25
  5. Step 5: Solve for x
    x = 123,937,556,621,520.25/12,355,832.40
  6. Step 6: Final answer
    x = 10,030,692.60

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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.