Home / 13,238.20-18,263.86-8,703.32

Finding the Fourth Proportional to 13,238.20, 18,263.86 and 8,703.32

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Solution

The fourth proportional to 13,238.20, 18,263.86 and 8,703.32 is: 12,007.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.20 : 18,263.86 = 8,703.32 : x
  2. Step 2: Convert to fraction form
    13,238.20/18,263.86 = 8,703.32/x
  3. Step 3: Cross multiply
    13,238.20x = 18,263.86 × 8,703.32
  4. Step 4: Simplify right side
    13,238.20x = 158,956,218.02
  5. Step 5: Solve for x
    x = 158,956,218.02/13,238.20
  6. Step 6: Final answer
    x = 12,007.39

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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.