Home / 20,220.88-30,312.12-7,064.68

Finding the Fourth Proportional to 20,220.88, 30,312.12 and 7,064.68

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Solution

The fourth proportional to 20,220.88, 30,312.12 and 7,064.68 is: 10,590.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.88 : 30,312.12 = 7,064.68 : x
  2. Step 2: Convert to fraction form
    20,220.88/30,312.12 = 7,064.68/x
  3. Step 3: Cross multiply
    20,220.88x = 30,312.12 × 7,064.68
  4. Step 4: Simplify right side
    20,220.88x = 214,145,427.92
  5. Step 5: Solve for x
    x = 214,145,427.92/20,220.88
  6. Step 6: Final answer
    x = 10,590.31

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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.