Home / 13,783.40-20,660.70-7,533.80

Finding the Fourth Proportional to 13,783.40, 20,660.70 and 7,533.80

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Solution

The fourth proportional to 13,783.40, 20,660.70 and 7,533.80 is: 11,292.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.40 : 20,660.70 = 7,533.80 : x
  2. Step 2: Convert to fraction form
    13,783.40/20,660.70 = 7,533.80/x
  3. Step 3: Cross multiply
    13,783.40x = 20,660.70 × 7,533.80
  4. Step 4: Simplify right side
    13,783.40x = 155,653,581.66
  5. Step 5: Solve for x
    x = 155,653,581.66/13,783.40
  6. Step 6: Final answer
    x = 11,292.83

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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.