Home / 20,268.70-30,417.41-7,122.10

Finding the Fourth Proportional to 20,268.70, 30,417.41 and 7,122.10

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Solution

The fourth proportional to 20,268.70, 30,417.41 and 7,122.10 is: 10,688.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,268.70 : 30,417.41 = 7,122.10 : x
  2. Step 2: Convert to fraction form
    20,268.70/30,417.41 = 7,122.10/x
  3. Step 3: Cross multiply
    20,268.70x = 30,417.41 × 7,122.10
  4. Step 4: Simplify right side
    20,268.70x = 216,635,724.11
  5. Step 5: Solve for x
    x = 216,635,724.11/20,268.70
  6. Step 6: Final answer
    x = 10,688.19

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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.