Home / 43,577.49-65,346.80-12,405.45

Finding the Fourth Proportional to 43,577.49, 65,346.80 and 12,405.45

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Solution

The fourth proportional to 43,577.49, 65,346.80 and 12,405.45 is: 18,602.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,577.49 : 65,346.80 = 12,405.45 : x
  2. Step 2: Convert to fraction form
    43,577.49/65,346.80 = 12,405.45/x
  3. Step 3: Cross multiply
    43,577.49x = 65,346.80 × 12,405.45
  4. Step 4: Simplify right side
    43,577.49x = 810,656,712.86
  5. Step 5: Solve for x
    x = 810,656,712.86/43,577.49
  6. Step 6: Final answer
    x = 18,602.65

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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.