Home / 20,553.88-30,830.90-4,971.52

Finding the Fourth Proportional to 20,553.88, 30,830.90 and 4,971.52

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Solution

The fourth proportional to 20,553.88, 30,830.90 and 4,971.52 is: 7,457.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.88 : 30,830.90 = 4,971.52 : x
  2. Step 2: Convert to fraction form
    20,553.88/30,830.90 = 4,971.52/x
  3. Step 3: Cross multiply
    20,553.88x = 30,830.90 × 4,971.52
  4. Step 4: Simplify right side
    20,553.88x = 153,276,435.97
  5. Step 5: Solve for x
    x = 153,276,435.97/20,553.88
  6. Step 6: Final answer
    x = 7,457.30

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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.