Home / 21,999.12-30,358.53-11,927.58

Finding the Fourth Proportional to 21,999.12, 30,358.53 and 11,927.58

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Solution

The fourth proportional to 21,999.12, 30,358.53 and 11,927.58 is: 16,459.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999.12 : 30,358.53 = 11,927.58 : x
  2. Step 2: Convert to fraction form
    21,999.12/30,358.53 = 11,927.58/x
  3. Step 3: Cross multiply
    21,999.12x = 30,358.53 × 11,927.58
  4. Step 4: Simplify right side
    21,999.12x = 362,103,795.26
  5. Step 5: Solve for x
    x = 362,103,795.26/21,999.12
  6. Step 6: Final answer
    x = 16,459.92

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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.