Home / 10,656,420.80-15,984,631.20-8,388,939.20

Finding the Fourth Proportional to 10,656,420.80, 15,984,631.20 and 8,388,939.20

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Solution

The fourth proportional to 10,656,420.80, 15,984,631.20 and 8,388,939.20 is: 12,583,408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,656,420.80 : 15,984,631.20 = 8,388,939.20 : x
  2. Step 2: Convert to fraction form
    10,656,420.80/15,984,631.20 = 8,388,939.20/x
  3. Step 3: Cross multiply
    10,656,420.80x = 15,984,631.20 × 8,388,939.20
  4. Step 4: Simplify right side
    10,656,420.80x = 134,094,099,271,223.02
  5. Step 5: Solve for x
    x = 134,094,099,271,223.02/10,656,420.80
  6. Step 6: Final answer
    x = 12,583,408.80

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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.