Home / 12,590,142.40-18,885,213.60-8,763,767.20

Finding the Fourth Proportional to 12,590,142.40, 18,885,213.60 and 8,763,767.20

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Solution

The fourth proportional to 12,590,142.40, 18,885,213.60 and 8,763,767.20 is: 13,145,650.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590,142.40 : 18,885,213.60 = 8,763,767.20 : x
  2. Step 2: Convert to fraction form
    12,590,142.40/18,885,213.60 = 8,763,767.20/x
  3. Step 3: Cross multiply
    12,590,142.40x = 18,885,213.60 × 8,763,767.20
  4. Step 4: Simplify right side
    12,590,142.40x = 165,505,615,512,673.91
  5. Step 5: Solve for x
    x = 165,505,615,512,673.91/12,590,142.40
  6. Step 6: Final answer
    x = 13,145,650.80

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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.