Home / 13,900.57-20,839.92-6,875.64

Finding the Fourth Proportional to 13,900.57, 20,839.92 and 6,875.64

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Solution

The fourth proportional to 13,900.57, 20,839.92 and 6,875.64 is: 10,308.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.57 : 20,839.92 = 6,875.64 : x
  2. Step 2: Convert to fraction form
    13,900.57/20,839.92 = 6,875.64/x
  3. Step 3: Cross multiply
    13,900.57x = 20,839.92 × 6,875.64
  4. Step 4: Simplify right side
    13,900.57x = 143,287,761.77
  5. Step 5: Solve for x
    x = 143,287,761.77/13,900.57
  6. Step 6: Final answer
    x = 10,308.05

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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.