Home / 20,178.08-30,223.36-9,768

Finding the Fourth Proportional to 20,178.08, 30,223.36 and 9,768

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Solution

The fourth proportional to 20,178.08, 30,223.36 and 9,768 is: 14,630.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.08 : 30,223.36 = 9,768 : x
  2. Step 2: Convert to fraction form
    20,178.08/30,223.36 = 9,768/x
  3. Step 3: Cross multiply
    20,178.08x = 30,223.36 × 9,768
  4. Step 4: Simplify right side
    20,178.08x = 295,221,780.48
  5. Step 5: Solve for x
    x = 295,221,780.48/20,178.08
  6. Step 6: Final answer
    x = 14,630.82

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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.