Home / 13,192.30-18,204.77-7,890.04

Finding the Fourth Proportional to 13,192.30, 18,204.77 and 7,890.04

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Solution

The fourth proportional to 13,192.30, 18,204.77 and 7,890.04 is: 10,887.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,192.30 : 18,204.77 = 7,890.04 : x
  2. Step 2: Convert to fraction form
    13,192.30/18,204.77 = 7,890.04/x
  3. Step 3: Cross multiply
    13,192.30x = 18,204.77 × 7,890.04
  4. Step 4: Simplify right side
    13,192.30x = 143,636,233.02
  5. Step 5: Solve for x
    x = 143,636,233.02/13,192.30
  6. Step 6: Final answer
    x = 10,887.89

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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.