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Finding the Fourth Proportional to 13,393.77, 18,444.42 and 12,538.02

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Solution

The fourth proportional to 13,393.77, 18,444.42 and 12,538.02 is: 17,265.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.77 : 18,444.42 = 12,538.02 : x
  2. Step 2: Convert to fraction form
    13,393.77/18,444.42 = 12,538.02/x
  3. Step 3: Cross multiply
    13,393.77x = 18,444.42 × 12,538.02
  4. Step 4: Simplify right side
    13,393.77x = 231,256,506.85
  5. Step 5: Solve for x
    x = 231,256,506.85/13,393.77
  6. Step 6: Final answer
    x = 17,265.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.