Home / 20,967.23-28,923.63-15,923.09

Finding the Fourth Proportional to 20,967.23, 28,923.63 and 15,923.09

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Solution

The fourth proportional to 20,967.23, 28,923.63 and 15,923.09 is: 21,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.23 : 28,923.63 = 15,923.09 : x
  2. Step 2: Convert to fraction form
    20,967.23/28,923.63 = 15,923.09/x
  3. Step 3: Cross multiply
    20,967.23x = 28,923.63 × 15,923.09
  4. Step 4: Simplify right side
    20,967.23x = 460,553,563.62
  5. Step 5: Solve for x
    x = 460,553,563.62/20,967.23
  6. Step 6: Final answer
    x = 21,965.40

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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.