Home / 22,051.55-30,431.02-11,979.91

Finding the Fourth Proportional to 22,051.55, 30,431.02 and 11,979.91

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Solution

The fourth proportional to 22,051.55, 30,431.02 and 11,979.91 is: 16,532.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,051.55 : 30,431.02 = 11,979.91 : x
  2. Step 2: Convert to fraction form
    22,051.55/30,431.02 = 11,979.91/x
  3. Step 3: Cross multiply
    22,051.55x = 30,431.02 × 11,979.91
  4. Step 4: Simplify right side
    22,051.55x = 364,560,880.81
  5. Step 5: Solve for x
    x = 364,560,880.81/22,051.55
  6. Step 6: Final answer
    x = 16,532.21

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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.