Home / 13,308.30-18,366.35-7,644.88

Finding the Fourth Proportional to 13,308.30, 18,366.35 and 7,644.88

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Solution

The fourth proportional to 13,308.30, 18,366.35 and 7,644.88 is: 10,550.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308.30 : 18,366.35 = 7,644.88 : x
  2. Step 2: Convert to fraction form
    13,308.30/18,366.35 = 7,644.88/x
  3. Step 3: Cross multiply
    13,308.30x = 18,366.35 × 7,644.88
  4. Step 4: Simplify right side
    13,308.30x = 140,408,526.52
  5. Step 5: Solve for x
    x = 140,408,526.52/13,308.30
  6. Step 6: Final answer
    x = 10,550.45

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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.