Home / 13,721.76-20,584.80-9,051.12

Finding the Fourth Proportional to 13,721.76, 20,584.80 and 9,051.12

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Solution

The fourth proportional to 13,721.76, 20,584.80 and 9,051.12 is: 13,578.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.76 : 20,584.80 = 9,051.12 : x
  2. Step 2: Convert to fraction form
    13,721.76/20,584.80 = 9,051.12/x
  3. Step 3: Cross multiply
    13,721.76x = 20,584.80 × 9,051.12
  4. Step 4: Simplify right side
    13,721.76x = 186,315,494.98
  5. Step 5: Solve for x
    x = 186,315,494.98/13,721.76
  6. Step 6: Final answer
    x = 13,578.10

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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.