Home / 20,970.24-28,939.44-11,410.65

Finding the Fourth Proportional to 20,970.24, 28,939.44 and 11,410.65

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Solution

The fourth proportional to 20,970.24, 28,939.44 and 11,410.65 is: 15,746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970.24 : 28,939.44 = 11,410.65 : x
  2. Step 2: Convert to fraction form
    20,970.24/28,939.44 = 11,410.65/x
  3. Step 3: Cross multiply
    20,970.24x = 28,939.44 × 11,410.65
  4. Step 4: Simplify right side
    20,970.24x = 330,217,821.04
  5. Step 5: Solve for x
    x = 330,217,821.04/20,970.24
  6. Step 6: Final answer
    x = 15,746.97

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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.