Home / 13,977.75-20,966.70-4,117.15

Finding the Fourth Proportional to 13,977.75, 20,966.70 and 4,117.15

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Solution

The fourth proportional to 13,977.75, 20,966.70 and 4,117.15 is: 6,175.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.75 : 20,966.70 = 4,117.15 : x
  2. Step 2: Convert to fraction form
    13,977.75/20,966.70 = 4,117.15/x
  3. Step 3: Cross multiply
    13,977.75x = 20,966.70 × 4,117.15
  4. Step 4: Simplify right side
    13,977.75x = 86,323,048.91
  5. Step 5: Solve for x
    x = 86,323,048.91/13,977.75
  6. Step 6: Final answer
    x = 6,175.75

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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.