Home / 18,138.18-25,030.35-10,071.80

Finding the Fourth Proportional to 18,138.18, 25,030.35 and 10,071.80

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Solution

The fourth proportional to 18,138.18, 25,030.35 and 10,071.80 is: 13,898.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,138.18 : 25,030.35 = 10,071.80 : x
  2. Step 2: Convert to fraction form
    18,138.18/25,030.35 = 10,071.80/x
  3. Step 3: Cross multiply
    18,138.18x = 25,030.35 × 10,071.80
  4. Step 4: Simplify right side
    18,138.18x = 252,100,553.98
  5. Step 5: Solve for x
    x = 252,100,553.98/18,138.18
  6. Step 6: Final answer
    x = 13,898.89

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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.