Home / 13,980.21-20,977.60-5,666.37

Finding the Fourth Proportional to 13,980.21, 20,977.60 and 5,666.37

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Solution

The fourth proportional to 13,980.21, 20,977.60 and 5,666.37 is: 8,502.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.21 : 20,977.60 = 5,666.37 : x
  2. Step 2: Convert to fraction form
    13,980.21/20,977.60 = 5,666.37/x
  3. Step 3: Cross multiply
    13,980.21x = 20,977.60 × 5,666.37
  4. Step 4: Simplify right side
    13,980.21x = 118,866,738.42
  5. Step 5: Solve for x
    x = 118,866,738.42/13,980.21
  6. Step 6: Final answer
    x = 8,502.50

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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.