Home / 13,269.15-18,312.39-8,785.26

Finding the Fourth Proportional to 13,269.15, 18,312.39 and 8,785.26

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Solution

The fourth proportional to 13,269.15, 18,312.39 and 8,785.26 is: 12,124.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,269.15 : 18,312.39 = 8,785.26 : x
  2. Step 2: Convert to fraction form
    13,269.15/18,312.39 = 8,785.26/x
  3. Step 3: Cross multiply
    13,269.15x = 18,312.39 × 8,785.26
  4. Step 4: Simplify right side
    13,269.15x = 160,879,107.37
  5. Step 5: Solve for x
    x = 160,879,107.37/13,269.15
  6. Step 6: Final answer
    x = 12,124.30

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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.