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Finding the Fourth Proportional to 12,235.62, 18,265.53 and 11,368.32

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Solution

The fourth proportional to 12,235.62, 18,265.53 and 11,368.32 is: 16,970.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,235.62 : 18,265.53 = 11,368.32 : x
  2. Step 2: Convert to fraction form
    12,235.62/18,265.53 = 11,368.32/x
  3. Step 3: Cross multiply
    12,235.62x = 18,265.53 × 11,368.32
  4. Step 4: Simplify right side
    12,235.62x = 207,648,390.01
  5. Step 5: Solve for x
    x = 207,648,390.01/12,235.62
  6. Step 6: Final answer
    x = 16,970.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.