Home / 20,088.36-30,129.11-5,297.42

Finding the Fourth Proportional to 20,088.36, 30,129.11 and 5,297.42

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Solution

The fourth proportional to 20,088.36, 30,129.11 and 5,297.42 is: 7,945.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088.36 : 30,129.11 = 5,297.42 : x
  2. Step 2: Convert to fraction form
    20,088.36/30,129.11 = 5,297.42/x
  3. Step 3: Cross multiply
    20,088.36x = 30,129.11 × 5,297.42
  4. Step 4: Simplify right side
    20,088.36x = 159,606,549.90
  5. Step 5: Solve for x
    x = 159,606,549.90/20,088.36
  6. Step 6: Final answer
    x = 7,945.23

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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.