Home / 13,394.28-18,445.12-12,538.52

Finding the Fourth Proportional to 13,394.28, 18,445.12 and 12,538.52

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Solution

The fourth proportional to 13,394.28, 18,445.12 and 12,538.52 is: 17,266.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,394.28 : 18,445.12 = 12,538.52 : x
  2. Step 2: Convert to fraction form
    13,394.28/18,445.12 = 12,538.52/x
  3. Step 3: Cross multiply
    13,394.28x = 18,445.12 × 12,538.52
  4. Step 4: Simplify right side
    13,394.28x = 231,274,506.02
  5. Step 5: Solve for x
    x = 231,274,506.02/13,394.28
  6. Step 6: Final answer
    x = 17,266.66

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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.