Home / 43,403.09-65,002.55-21,146.72

Finding the Fourth Proportional to 43,403.09, 65,002.55 and 21,146.72

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Solution

The fourth proportional to 43,403.09, 65,002.55 and 21,146.72 is: 31,670.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,403.09 : 65,002.55 = 21,146.72 : x
  2. Step 2: Convert to fraction form
    43,403.09/65,002.55 = 21,146.72/x
  3. Step 3: Cross multiply
    43,403.09x = 65,002.55 × 21,146.72
  4. Step 4: Simplify right side
    43,403.09x = 1,374,590,293.39
  5. Step 5: Solve for x
    x = 1,374,590,293.39/43,403.09
  6. Step 6: Final answer
    x = 31,670.34

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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.