Home / 14,043.39-21,054.69-6,639.20

Finding the Fourth Proportional to 14,043.39, 21,054.69 and 6,639.20

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Solution

The fourth proportional to 14,043.39, 21,054.69 and 6,639.20 is: 9,953.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,043.39 : 21,054.69 = 6,639.20 : x
  2. Step 2: Convert to fraction form
    14,043.39/21,054.69 = 6,639.20/x
  3. Step 3: Cross multiply
    14,043.39x = 21,054.69 × 6,639.20
  4. Step 4: Simplify right side
    14,043.39x = 139,786,297.85
  5. Step 5: Solve for x
    x = 139,786,297.85/14,043.39
  6. Step 6: Final answer
    x = 9,953.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.