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Finding the Fourth Proportional to 12,435.76, 18,615.04 and 9,297.28

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Solution

The fourth proportional to 12,435.76, 18,615.04 and 9,297.28 is: 13,917.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,435.76 : 18,615.04 = 9,297.28 : x
  2. Step 2: Convert to fraction form
    12,435.76/18,615.04 = 9,297.28/x
  3. Step 3: Cross multiply
    12,435.76x = 18,615.04 × 9,297.28
  4. Step 4: Simplify right side
    12,435.76x = 173,069,239.09
  5. Step 5: Solve for x
    x = 173,069,239.09/12,435.76
  6. Step 6: Final answer
    x = 13,917.06

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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.