Home / 14,128.36-21,178.74-6,730.84

Finding the Fourth Proportional to 14,128.36, 21,178.74 and 6,730.84

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Solution

The fourth proportional to 14,128.36, 21,178.74 and 6,730.84 is: 10,089.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,128.36 : 21,178.74 = 6,730.84 : x
  2. Step 2: Convert to fraction form
    14,128.36/21,178.74 = 6,730.84/x
  3. Step 3: Cross multiply
    14,128.36x = 21,178.74 × 6,730.84
  4. Step 4: Simplify right side
    14,128.36x = 142,550,710.34
  5. Step 5: Solve for x
    x = 142,550,710.34/14,128.36
  6. Step 6: Final answer
    x = 10,089.69

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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.