Home / 21,962.32-30,308.02-11,890.77

Finding the Fourth Proportional to 21,962.32, 30,308.02 and 11,890.77

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Solution

The fourth proportional to 21,962.32, 30,308.02 and 11,890.77 is: 16,409.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,962.32 : 30,308.02 = 11,890.77 : x
  2. Step 2: Convert to fraction form
    21,962.32/30,308.02 = 11,890.77/x
  3. Step 3: Cross multiply
    21,962.32x = 30,308.02 × 11,890.77
  4. Step 4: Simplify right side
    21,962.32x = 360,385,694.98
  5. Step 5: Solve for x
    x = 360,385,694.98/21,962.32
  6. Step 6: Final answer
    x = 16,409.27

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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.