Home / 20,250.10-30,390.72-13,228.21

Finding the Fourth Proportional to 20,250.10, 30,390.72 and 13,228.21

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Solution

The fourth proportional to 20,250.10, 30,390.72 and 13,228.21 is: 19,852.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,250.10 : 30,390.72 = 13,228.21 : x
  2. Step 2: Convert to fraction form
    20,250.10/30,390.72 = 13,228.21/x
  3. Step 3: Cross multiply
    20,250.10x = 30,390.72 × 13,228.21
  4. Step 4: Simplify right side
    20,250.10x = 402,014,826.21
  5. Step 5: Solve for x
    x = 402,014,826.21/20,250.10
  6. Step 6: Final answer
    x = 19,852.49

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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.