Home / 13,020.12-19,530.18-3,159.24

Finding the Fourth Proportional to 13,020.12, 19,530.18 and 3,159.24

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Solution

The fourth proportional to 13,020.12, 19,530.18 and 3,159.24 is: 4,738.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.12 : 19,530.18 = 3,159.24 : x
  2. Step 2: Convert to fraction form
    13,020.12/19,530.18 = 3,159.24/x
  3. Step 3: Cross multiply
    13,020.12x = 19,530.18 × 3,159.24
  4. Step 4: Simplify right side
    13,020.12x = 61,700,525.86
  5. Step 5: Solve for x
    x = 61,700,525.86/13,020.12
  6. Step 6: Final answer
    x = 4,738.86

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Similar ratio
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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.