Home / 13,412.08-19,976.24-12,709.52

Finding the Fourth Proportional to 13,412.08, 19,976.24 and 12,709.52

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Solution

The fourth proportional to 13,412.08, 19,976.24 and 12,709.52 is: 18,929.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.08 : 19,976.24 = 12,709.52 : x
  2. Step 2: Convert to fraction form
    13,412.08/19,976.24 = 12,709.52/x
  3. Step 3: Cross multiply
    13,412.08x = 19,976.24 × 12,709.52
  4. Step 4: Simplify right side
    13,412.08x = 253,888,421.80
  5. Step 5: Solve for x
    x = 253,888,421.80/13,412.08
  6. Step 6: Final answer
    x = 18,929.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.