Home / 20,103.52-30,125.44-18,980.16

Finding the Fourth Proportional to 20,103.52, 30,125.44 and 18,980.16

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Solution

The fourth proportional to 20,103.52, 30,125.44 and 18,980.16 is: 28,442.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.52 : 30,125.44 = 18,980.16 : x
  2. Step 2: Convert to fraction form
    20,103.52/30,125.44 = 18,980.16/x
  3. Step 3: Cross multiply
    20,103.52x = 30,125.44 × 18,980.16
  4. Step 4: Simplify right side
    20,103.52x = 571,785,671.27
  5. Step 5: Solve for x
    x = 571,785,671.27/20,103.52
  6. Step 6: Final answer
    x = 28,442.07

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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.