Home / 13,977.46-19,288.50-7,689.84

Finding the Fourth Proportional to 13,977.46, 19,288.50 and 7,689.84

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Solution

The fourth proportional to 13,977.46, 19,288.50 and 7,689.84 is: 10,611.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.46 : 19,288.50 = 7,689.84 : x
  2. Step 2: Convert to fraction form
    13,977.46/19,288.50 = 7,689.84/x
  3. Step 3: Cross multiply
    13,977.46x = 19,288.50 × 7,689.84
  4. Step 4: Simplify right side
    13,977.46x = 148,325,478.84
  5. Step 5: Solve for x
    x = 148,325,478.84/13,977.46
  6. Step 6: Final answer
    x = 10,611.76

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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.