Home / 19,918.89-29,869.88-8,817.75

Finding the Fourth Proportional to 19,918.89, 29,869.88 and 8,817.75

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Solution

The fourth proportional to 19,918.89, 29,869.88 and 8,817.75 is: 13,222.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.89 : 29,869.88 = 8,817.75 : x
  2. Step 2: Convert to fraction form
    19,918.89/29,869.88 = 8,817.75/x
  3. Step 3: Cross multiply
    19,918.89x = 29,869.88 × 8,817.75
  4. Step 4: Simplify right side
    19,918.89x = 263,385,090.28
  5. Step 5: Solve for x
    x = 263,385,090.28/19,918.89
  6. Step 6: Final answer
    x = 13,222.88

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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.