Home / 14,653.33-20,221.60-7,939

Finding the Fourth Proportional to 14,653.33, 20,221.60 and 7,939

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Solution

The fourth proportional to 14,653.33, 20,221.60 and 7,939 is: 10,955.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,653.33 : 20,221.60 = 7,939 : x
  2. Step 2: Convert to fraction form
    14,653.33/20,221.60 = 7,939/x
  3. Step 3: Cross multiply
    14,653.33x = 20,221.60 × 7,939
  4. Step 4: Simplify right side
    14,653.33x = 160,539,282.40
  5. Step 5: Solve for x
    x = 160,539,282.40/14,653.33
  6. Step 6: Final answer
    x = 10,955.82

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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.