Home / 20,080.31-30,123.90-6,929.60

Finding the Fourth Proportional to 20,080.31, 30,123.90 and 6,929.60

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Solution

The fourth proportional to 20,080.31, 30,123.90 and 6,929.60 is: 10,395.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.31 : 30,123.90 = 6,929.60 : x
  2. Step 2: Convert to fraction form
    20,080.31/30,123.90 = 6,929.60/x
  3. Step 3: Cross multiply
    20,080.31x = 30,123.90 × 6,929.60
  4. Step 4: Simplify right side
    20,080.31x = 208,746,426.82
  5. Step 5: Solve for x
    x = 208,746,426.82/20,080.31
  6. Step 6: Final answer
    x = 10,395.58

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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.