Home / 21,764.25-30,037.50-12,812.58

Finding the Fourth Proportional to 21,764.25, 30,037.50 and 12,812.58

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Solution

The fourth proportional to 21,764.25, 30,037.50 and 12,812.58 is: 17,683.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,764.25 : 30,037.50 = 12,812.58 : x
  2. Step 2: Convert to fraction form
    21,764.25/30,037.50 = 12,812.58/x
  3. Step 3: Cross multiply
    21,764.25x = 30,037.50 × 12,812.58
  4. Step 4: Simplify right side
    21,764.25x = 384,857,871.75
  5. Step 5: Solve for x
    x = 384,857,871.75/21,764.25
  6. Step 6: Final answer
    x = 17,683.03

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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.