Home / 20,567.76-30,851.34-4,985.28

Finding the Fourth Proportional to 20,567.76, 30,851.34 and 4,985.28

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Solution

The fourth proportional to 20,567.76, 30,851.34 and 4,985.28 is: 7,477.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,567.76 : 30,851.34 = 4,985.28 : x
  2. Step 2: Convert to fraction form
    20,567.76/30,851.34 = 4,985.28/x
  3. Step 3: Cross multiply
    20,567.76x = 30,851.34 × 4,985.28
  4. Step 4: Simplify right side
    20,567.76x = 153,802,568.28
  5. Step 5: Solve for x
    x = 153,802,568.28/20,567.76
  6. Step 6: Final answer
    x = 7,477.85

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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.