Home / 19,985.39-29,996.31-8,890.01

Finding the Fourth Proportional to 19,985.39, 29,996.31 and 8,890.01

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Solution

The fourth proportional to 19,985.39, 29,996.31 and 8,890.01 is: 13,343.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.39 : 29,996.31 = 8,890.01 : x
  2. Step 2: Convert to fraction form
    19,985.39/29,996.31 = 8,890.01/x
  3. Step 3: Cross multiply
    19,985.39x = 29,996.31 × 8,890.01
  4. Step 4: Simplify right side
    19,985.39x = 266,667,495.86
  5. Step 5: Solve for x
    x = 266,667,495.86/19,985.39
  6. Step 6: Final answer
    x = 13,343.12

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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.