Home / 20,345.10-30,533.28-9,103.92

Finding the Fourth Proportional to 20,345.10, 30,533.28 and 9,103.92

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Solution

The fourth proportional to 20,345.10, 30,533.28 and 9,103.92 is: 13,662.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.10 : 30,533.28 = 9,103.92 : x
  2. Step 2: Convert to fraction form
    20,345.10/30,533.28 = 9,103.92/x
  3. Step 3: Cross multiply
    20,345.10x = 30,533.28 × 9,103.92
  4. Step 4: Simplify right side
    20,345.10x = 277,972,538.46
  5. Step 5: Solve for x
    x = 277,972,538.46/20,345.10
  6. Step 6: Final answer
    x = 13,662.87

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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.