Home / 21,376.68-29,500.36-11,945.84

Finding the Fourth Proportional to 21,376.68, 29,500.36 and 11,945.84

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Solution

The fourth proportional to 21,376.68, 29,500.36 and 11,945.84 is: 16,485.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376.68 : 29,500.36 = 11,945.84 : x
  2. Step 2: Convert to fraction form
    21,376.68/29,500.36 = 11,945.84/x
  3. Step 3: Cross multiply
    21,376.68x = 29,500.36 × 11,945.84
  4. Step 4: Simplify right side
    21,376.68x = 352,406,580.50
  5. Step 5: Solve for x
    x = 352,406,580.50/21,376.68
  6. Step 6: Final answer
    x = 16,485.56

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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.