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Finding the Fourth Proportional to 12,435.16, 18,617.86 and 9,329.62

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Solution

The fourth proportional to 12,435.16, 18,617.86 and 9,329.62 is: 13,968.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,435.16 : 18,617.86 = 9,329.62 : x
  2. Step 2: Convert to fraction form
    12,435.16/18,617.86 = 9,329.62/x
  3. Step 3: Cross multiply
    12,435.16x = 18,617.86 × 9,329.62
  4. Step 4: Simplify right side
    12,435.16x = 173,697,559.01
  5. Step 5: Solve for x
    x = 173,697,559.01/12,435.16
  6. Step 6: Final answer
    x = 13,968.26

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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.