Home / 13,977.21-19,288.23-8,012.40

Finding the Fourth Proportional to 13,977.21, 19,288.23 and 8,012.40

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Solution

The fourth proportional to 13,977.21, 19,288.23 and 8,012.40 is: 11,056.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.21 : 19,288.23 = 8,012.40 : x
  2. Step 2: Convert to fraction form
    13,977.21/19,288.23 = 8,012.40/x
  3. Step 3: Cross multiply
    13,977.21x = 19,288.23 × 8,012.40
  4. Step 4: Simplify right side
    13,977.21x = 154,545,014.05
  5. Step 5: Solve for x
    x = 154,545,014.05/13,977.21
  6. Step 6: Final answer
    x = 11,056.93

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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.