Home / 13,358.45-18,443.06-8,580.32

Finding the Fourth Proportional to 13,358.45, 18,443.06 and 8,580.32

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Solution

The fourth proportional to 13,358.45, 18,443.06 and 8,580.32 is: 11,846.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.45 : 18,443.06 = 8,580.32 : x
  2. Step 2: Convert to fraction form
    13,358.45/18,443.06 = 8,580.32/x
  3. Step 3: Cross multiply
    13,358.45x = 18,443.06 × 8,580.32
  4. Step 4: Simplify right side
    13,358.45x = 158,247,221.46
  5. Step 5: Solve for x
    x = 158,247,221.46/13,358.45
  6. Step 6: Final answer
    x = 11,846.23

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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.