Home / 20,178.40-30,267.60-10,962.40

Finding the Fourth Proportional to 20,178.40, 30,267.60 and 10,962.40

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Solution

The fourth proportional to 20,178.40, 30,267.60 and 10,962.40 is: 16,443.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.40 : 30,267.60 = 10,962.40 : x
  2. Step 2: Convert to fraction form
    20,178.40/30,267.60 = 10,962.40/x
  3. Step 3: Cross multiply
    20,178.40x = 30,267.60 × 10,962.40
  4. Step 4: Simplify right side
    20,178.40x = 331,805,538.24
  5. Step 5: Solve for x
    x = 331,805,538.24/20,178.40
  6. Step 6: Final answer
    x = 16,443.60

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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.