Home / 13,354.80-18,378.72-12,538.32

Finding the Fourth Proportional to 13,354.80, 18,378.72 and 12,538.32

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Solution

The fourth proportional to 13,354.80, 18,378.72 and 12,538.32 is: 17,255.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,354.80 : 18,378.72 = 12,538.32 : x
  2. Step 2: Convert to fraction form
    13,354.80/18,378.72 = 12,538.32/x
  3. Step 3: Cross multiply
    13,354.80x = 18,378.72 × 12,538.32
  4. Step 4: Simplify right side
    13,354.80x = 230,438,272.55
  5. Step 5: Solve for x
    x = 230,438,272.55/13,354.80
  6. Step 6: Final answer
    x = 17,255.09

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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.