Home / 13,686.72-20,532.84-4,328.20

Finding the Fourth Proportional to 13,686.72, 20,532.84 and 4,328.20

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Solution

The fourth proportional to 13,686.72, 20,532.84 and 4,328.20 is: 6,493.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.72 : 20,532.84 = 4,328.20 : x
  2. Step 2: Convert to fraction form
    13,686.72/20,532.84 = 4,328.20/x
  3. Step 3: Cross multiply
    13,686.72x = 20,532.84 × 4,328.20
  4. Step 4: Simplify right side
    13,686.72x = 88,870,238.09
  5. Step 5: Solve for x
    x = 88,870,238.09/13,686.72
  6. Step 6: Final answer
    x = 6,493.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.