Home / 20,637.69-28,479.72-11,684.96

Finding the Fourth Proportional to 20,637.69, 28,479.72 and 11,684.96

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Solution

The fourth proportional to 20,637.69, 28,479.72 and 11,684.96 is: 16,125.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,637.69 : 28,479.72 = 11,684.96 : x
  2. Step 2: Convert to fraction form
    20,637.69/28,479.72 = 11,684.96/x
  3. Step 3: Cross multiply
    20,637.69x = 28,479.72 × 11,684.96
  4. Step 4: Simplify right side
    20,637.69x = 332,784,389.01
  5. Step 5: Solve for x
    x = 332,784,389.01/20,637.69
  6. Step 6: Final answer
    x = 16,125.08

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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.