Home / 12,128,391.34-16,744,733.55-7,720,604.01

Finding the Fourth Proportional to 12,128,391.34, 16,744,733.55 and 7,720,604.01

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Solution

The fourth proportional to 12,128,391.34, 16,744,733.55 and 7,720,604.01 is: 10,659,241.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,391.34 : 16,744,733.55 = 7,720,604.01 : x
  2. Step 2: Convert to fraction form
    12,128,391.34/16,744,733.55 = 7,720,604.01/x
  3. Step 3: Cross multiply
    12,128,391.34x = 16,744,733.55 × 7,720,604.01
  4. Step 4: Simplify right side
    12,128,391.34x = 129,279,457,015,071.86
  5. Step 5: Solve for x
    x = 129,279,457,015,071.86/12,128,391.34
  6. Step 6: Final answer
    x = 10,659,241.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.