Home / 13,855.05-20,763.42-12,001.57

Finding the Fourth Proportional to 13,855.05, 20,763.42 and 12,001.57

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Solution

The fourth proportional to 13,855.05, 20,763.42 and 12,001.57 is: 17,985.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.05 : 20,763.42 = 12,001.57 : x
  2. Step 2: Convert to fraction form
    13,855.05/20,763.42 = 12,001.57/x
  3. Step 3: Cross multiply
    13,855.05x = 20,763.42 × 12,001.57
  4. Step 4: Simplify right side
    13,855.05x = 249,193,586.66
  5. Step 5: Solve for x
    x = 249,193,586.66/13,855.05
  6. Step 6: Final answer
    x = 17,985.76

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1.5x scale

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.