Home / 20,211.60-30,331.80-8,533.20

Finding the Fourth Proportional to 20,211.60, 30,331.80 and 8,533.20

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Solution

The fourth proportional to 20,211.60, 30,331.80 and 8,533.20 is: 12,805.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.60 : 30,331.80 = 8,533.20 : x
  2. Step 2: Convert to fraction form
    20,211.60/30,331.80 = 8,533.20/x
  3. Step 3: Cross multiply
    20,211.60x = 30,331.80 × 8,533.20
  4. Step 4: Simplify right side
    20,211.60x = 258,827,315.76
  5. Step 5: Solve for x
    x = 258,827,315.76/20,211.60
  6. Step 6: Final answer
    x = 12,805.88

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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.