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Finding the Fourth Proportional to 13,475.64, 20,201.04 and 12,368.64

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Solution

The fourth proportional to 13,475.64, 20,201.04 and 12,368.64 is: 18,541.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,475.64 : 20,201.04 = 12,368.64 : x
  2. Step 2: Convert to fraction form
    13,475.64/20,201.04 = 12,368.64/x
  3. Step 3: Cross multiply
    13,475.64x = 20,201.04 × 12,368.64
  4. Step 4: Simplify right side
    13,475.64x = 249,859,391.39
  5. Step 5: Solve for x
    x = 249,859,391.39/13,475.64
  6. Step 6: Final answer
    x = 18,541.56

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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.