Home / 13,328.45-18,392.58-7,360.64

Finding the Fourth Proportional to 13,328.45, 18,392.58 and 7,360.64

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Solution

The fourth proportional to 13,328.45, 18,392.58 and 7,360.64 is: 10,157.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.45 : 18,392.58 = 7,360.64 : x
  2. Step 2: Convert to fraction form
    13,328.45/18,392.58 = 7,360.64/x
  3. Step 3: Cross multiply
    13,328.45x = 18,392.58 × 7,360.64
  4. Step 4: Simplify right side
    13,328.45x = 135,381,206.03
  5. Step 5: Solve for x
    x = 135,381,206.03/13,328.45
  6. Step 6: Final answer
    x = 10,157.31

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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.