Home / 18,312.09-27,469.89-4,985.25

Finding the Fourth Proportional to 18,312.09, 27,469.89 and 4,985.25

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Solution

The fourth proportional to 18,312.09, 27,469.89 and 4,985.25 is: 7,478.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.09 : 27,469.89 = 4,985.25 : x
  2. Step 2: Convert to fraction form
    18,312.09/27,469.89 = 4,985.25/x
  3. Step 3: Cross multiply
    18,312.09x = 27,469.89 × 4,985.25
  4. Step 4: Simplify right side
    18,312.09x = 136,944,269.12
  5. Step 5: Solve for x
    x = 136,944,269.12/18,312.09
  6. Step 6: Final answer
    x = 7,478.35

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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.