Home / 20,400,820.32-30,580,784.24-9,478,683.12

Finding the Fourth Proportional to 20,400,820.32, 30,580,784.24 and 9,478,683.12

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Solution

The fourth proportional to 20,400,820.32, 30,580,784.24 and 9,478,683.12 is: 14,208,524.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400,820.32 : 30,580,784.24 = 9,478,683.12 : x
  2. Step 2: Convert to fraction form
    20,400,820.32/30,580,784.24 = 9,478,683.12/x
  3. Step 3: Cross multiply
    20,400,820.32x = 30,580,784.24 × 9,478,683.12
  4. Step 4: Simplify right side
    20,400,820.32x = 289,865,563,372,050
  5. Step 5: Solve for x
    x = 289,865,563,372,050/20,400,820.32
  6. Step 6: Final answer
    x = 14,208,524.89

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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.