Home / 19,997.56-29,920.96-11,962.56

Finding the Fourth Proportional to 19,997.56, 29,920.96 and 11,962.56

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Solution

The fourth proportional to 19,997.56, 29,920.96 and 11,962.56 is: 17,898.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,997.56 : 29,920.96 = 11,962.56 : x
  2. Step 2: Convert to fraction form
    19,997.56/29,920.96 = 11,962.56/x
  3. Step 3: Cross multiply
    19,997.56x = 29,920.96 × 11,962.56
  4. Step 4: Simplify right side
    19,997.56x = 357,931,279.26
  5. Step 5: Solve for x
    x = 357,931,279.26/19,997.56
  6. Step 6: Final answer
    x = 17,898.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.