Home / 20,553.37-30,830.07-4,970.99

Finding the Fourth Proportional to 20,553.37, 30,830.07 and 4,970.99

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Solution

The fourth proportional to 20,553.37, 30,830.07 and 4,970.99 is: 7,456.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.37 : 30,830.07 = 4,970.99 : x
  2. Step 2: Convert to fraction form
    20,553.37/30,830.07 = 4,970.99/x
  3. Step 3: Cross multiply
    20,553.37x = 30,830.07 × 4,970.99
  4. Step 4: Simplify right side
    20,553.37x = 153,256,034.32
  5. Step 5: Solve for x
    x = 153,256,034.32/20,553.37
  6. Step 6: Final answer
    x = 7,456.49

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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.