Home / 13,643.24-18,826.14-7,674.78

Finding the Fourth Proportional to 13,643.24, 18,826.14 and 7,674.78

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Solution

The fourth proportional to 13,643.24, 18,826.14 and 7,674.78 is: 10,590.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.24 : 18,826.14 = 7,674.78 : x
  2. Step 2: Convert to fraction form
    13,643.24/18,826.14 = 7,674.78/x
  3. Step 3: Cross multiply
    13,643.24x = 18,826.14 × 7,674.78
  4. Step 4: Simplify right side
    13,643.24x = 144,486,538.96
  5. Step 5: Solve for x
    x = 144,486,538.96/13,643.24
  6. Step 6: Final answer
    x = 10,590.34

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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.