Home / 13,219.92-18,238.80-7,550.64

Finding the Fourth Proportional to 13,219.92, 18,238.80 and 7,550.64

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Solution

The fourth proportional to 13,219.92, 18,238.80 and 7,550.64 is: 10,417.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.92 : 18,238.80 = 7,550.64 : x
  2. Step 2: Convert to fraction form
    13,219.92/18,238.80 = 7,550.64/x
  3. Step 3: Cross multiply
    13,219.92x = 18,238.80 × 7,550.64
  4. Step 4: Simplify right side
    13,219.92x = 137,714,612.83
  5. Step 5: Solve for x
    x = 137,714,612.83/13,219.92
  6. Step 6: Final answer
    x = 10,417.20

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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.