Home / 13,129.00-18,118.04-7,160.69

Finding the Fourth Proportional to 13,129.00, 18,118.04 and 7,160.69

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Solution

The fourth proportional to 13,129.00, 18,118.04 and 7,160.69 is: 9,881.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.00 : 18,118.04 = 7,160.69 : x
  2. Step 2: Convert to fraction form
    13,129.00/18,118.04 = 7,160.69/x
  3. Step 3: Cross multiply
    13,129.00x = 18,118.04 × 7,160.69
  4. Step 4: Simplify right side
    13,129.00x = 129,737,677.34
  5. Step 5: Solve for x
    x = 129,737,677.34/13,129.00
  6. Step 6: Final answer
    x = 9,881.77

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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.