Home / 13,632.86-20,412.81-8,005.89

Finding the Fourth Proportional to 13,632.86, 20,412.81 and 8,005.89

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Solution

The fourth proportional to 13,632.86, 20,412.81 and 8,005.89 is: 11,987.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,632.86 : 20,412.81 = 8,005.89 : x
  2. Step 2: Convert to fraction form
    13,632.86/20,412.81 = 8,005.89/x
  3. Step 3: Cross multiply
    13,632.86x = 20,412.81 × 8,005.89
  4. Step 4: Simplify right side
    13,632.86x = 163,422,649.91
  5. Step 5: Solve for x
    x = 163,422,649.91/13,632.86
  6. Step 6: Final answer
    x = 11,987.41

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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.