Home / 19,786.34-29,686.54-6,638.70

Finding the Fourth Proportional to 19,786.34, 29,686.54 and 6,638.70

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Solution

The fourth proportional to 19,786.34, 29,686.54 and 6,638.70 is: 9,960.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,786.34 : 29,686.54 = 6,638.70 : x
  2. Step 2: Convert to fraction form
    19,786.34/29,686.54 = 6,638.70/x
  3. Step 3: Cross multiply
    19,786.34x = 29,686.54 × 6,638.70
  4. Step 4: Simplify right side
    19,786.34x = 197,080,033.10
  5. Step 5: Solve for x
    x = 197,080,033.10/19,786.34
  6. Step 6: Final answer
    x = 9,960.41

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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.