Home / 43,569.95-65,353.55-12,405.20

Finding the Fourth Proportional to 43,569.95, 65,353.55 and 12,405.20

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Solution

The fourth proportional to 43,569.95, 65,353.55 and 12,405.20 is: 18,607.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,569.95 : 65,353.55 = 12,405.20 : x
  2. Step 2: Convert to fraction form
    43,569.95/65,353.55 = 12,405.20/x
  3. Step 3: Cross multiply
    43,569.95x = 65,353.55 × 12,405.20
  4. Step 4: Simplify right side
    43,569.95x = 810,723,469.67
  5. Step 5: Solve for x
    x = 810,723,469.67/43,569.95
  6. Step 6: Final answer
    x = 18,607.40

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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.