Home / 43,569.75-65,354.62-12,405

Finding the Fourth Proportional to 43,569.75, 65,354.62 and 12,405

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Solution

The fourth proportional to 43,569.75, 65,354.62 and 12,405 is: 18,607.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,569.75 : 65,354.62 = 12,405 : x
  2. Step 2: Convert to fraction form
    43,569.75/65,354.62 = 12,405/x
  3. Step 3: Cross multiply
    43,569.75x = 65,354.62 × 12,405
  4. Step 4: Simplify right side
    43,569.75x = 810,724,061.10
  5. Step 5: Solve for x
    x = 810,724,061.10/43,569.75
  6. Step 6: Final answer
    x = 18,607.50

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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.