Home / 21,784.26-30,053.58-12,817.56

Finding the Fourth Proportional to 21,784.26, 30,053.58 and 12,817.56

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Solution

The fourth proportional to 21,784.26, 30,053.58 and 12,817.56 is: 17,683.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,784.26 : 30,053.58 = 12,817.56 : x
  2. Step 2: Convert to fraction form
    21,784.26/30,053.58 = 12,817.56/x
  3. Step 3: Cross multiply
    21,784.26x = 30,053.58 × 12,817.56
  4. Step 4: Simplify right side
    21,784.26x = 385,213,564.86
  5. Step 5: Solve for x
    x = 385,213,564.86/21,784.26
  6. Step 6: Final answer
    x = 17,683.11

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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.