Home / 13,890.45-20,839.05-4,029.51

Finding the Fourth Proportional to 13,890.45, 20,839.05 and 4,029.51

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Solution

The fourth proportional to 13,890.45, 20,839.05 and 4,029.51 is: 6,045.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.45 : 20,839.05 = 4,029.51 : x
  2. Step 2: Convert to fraction form
    13,890.45/20,839.05 = 4,029.51/x
  3. Step 3: Cross multiply
    13,890.45x = 20,839.05 × 4,029.51
  4. Step 4: Simplify right side
    13,890.45x = 83,971,160.37
  5. Step 5: Solve for x
    x = 83,971,160.37/13,890.45
  6. Step 6: Final answer
    x = 6,045.24

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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.