Home / 20,646.90-30,970.32-5,064.36

Finding the Fourth Proportional to 20,646.90, 30,970.32 and 5,064.36

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Solution

The fourth proportional to 20,646.90, 30,970.32 and 5,064.36 is: 7,596.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.90 : 30,970.32 = 5,064.36 : x
  2. Step 2: Convert to fraction form
    20,646.90/30,970.32 = 5,064.36/x
  3. Step 3: Cross multiply
    20,646.90x = 30,970.32 × 5,064.36
  4. Step 4: Simplify right side
    20,646.90x = 156,844,849.80
  5. Step 5: Solve for x
    x = 156,844,849.80/20,646.90
  6. Step 6: Final answer
    x = 7,596.53

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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.