Home / 13,780.75-20,671.14-3,392.50

Finding the Fourth Proportional to 13,780.75, 20,671.14 and 3,392.50

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Solution

The fourth proportional to 13,780.75, 20,671.14 and 3,392.50 is: 5,088.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,780.75 : 20,671.14 = 3,392.50 : x
  2. Step 2: Convert to fraction form
    13,780.75/20,671.14 = 3,392.50/x
  3. Step 3: Cross multiply
    13,780.75x = 20,671.14 × 3,392.50
  4. Step 4: Simplify right side
    13,780.75x = 70,126,842.45
  5. Step 5: Solve for x
    x = 70,126,842.45/13,780.75
  6. Step 6: Final answer
    x = 5,088.75

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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.