Home / 13,977.30-19,288.67-7,689.67

Finding the Fourth Proportional to 13,977.30, 19,288.67 and 7,689.67

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Solution

The fourth proportional to 13,977.30, 19,288.67 and 7,689.67 is: 10,611.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.30 : 19,288.67 = 7,689.67 : x
  2. Step 2: Convert to fraction form
    13,977.30/19,288.67 = 7,689.67/x
  3. Step 3: Cross multiply
    13,977.30x = 19,288.67 × 7,689.67
  4. Step 4: Simplify right side
    13,977.30x = 148,323,507.04
  5. Step 5: Solve for x
    x = 148,323,507.04/13,977.30
  6. Step 6: Final answer
    x = 10,611.74

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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.