Home / 14,513.87-20,028.12-8,139.98

Finding the Fourth Proportional to 14,513.87, 20,028.12 and 8,139.98

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Solution

The fourth proportional to 14,513.87, 20,028.12 and 8,139.98 is: 11,232.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,513.87 : 20,028.12 = 8,139.98 : x
  2. Step 2: Convert to fraction form
    14,513.87/20,028.12 = 8,139.98/x
  3. Step 3: Cross multiply
    14,513.87x = 20,028.12 × 8,139.98
  4. Step 4: Simplify right side
    14,513.87x = 163,028,496.24
  5. Step 5: Solve for x
    x = 163,028,496.24/14,513.87
  6. Step 6: Final answer
    x = 11,232.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.