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Finding the Fourth Proportional to 43,569.76, 65,354.62 and 12,405.01

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Solution

The fourth proportional to 43,569.76, 65,354.62 and 12,405.01 is: 18,607.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,569.76 : 65,354.62 = 12,405.01 : x
  2. Step 2: Convert to fraction form
    43,569.76/65,354.62 = 12,405.01/x
  3. Step 3: Cross multiply
    43,569.76x = 65,354.62 × 12,405.01
  4. Step 4: Simplify right side
    43,569.76x = 810,724,325.85
  5. Step 5: Solve for x
    x = 810,724,325.85/43,569.76
  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.