Home / 20,553.16-30,829.75-4,970.80

Finding the Fourth Proportional to 20,553.16, 30,829.75 and 4,970.80

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Solution

The fourth proportional to 20,553.16, 30,829.75 and 4,970.80 is: 7,456.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.16 : 30,829.75 = 4,970.80 : x
  2. Step 2: Convert to fraction form
    20,553.16/30,829.75 = 4,970.80/x
  3. Step 3: Cross multiply
    20,553.16x = 30,829.75 × 4,970.80
  4. Step 4: Simplify right side
    20,553.16x = 153,248,354.72
  5. Step 5: Solve for x
    x = 153,248,354.72/20,553.16
  6. Step 6: Final answer
    x = 7,456.20

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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.