Home / 10,980.20-16,422.30-9,818.60

Finding the Fourth Proportional to 10,980.20, 16,422.30 and 9,818.60

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Solution

The fourth proportional to 10,980.20, 16,422.30 and 9,818.60 is: 14,684.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,980.20 : 16,422.30 = 9,818.60 : x
  2. Step 2: Convert to fraction form
    10,980.20/16,422.30 = 9,818.60/x
  3. Step 3: Cross multiply
    10,980.20x = 16,422.30 × 9,818.60
  4. Step 4: Simplify right side
    10,980.20x = 161,243,994.78
  5. Step 5: Solve for x
    x = 161,243,994.78/10,980.20
  6. Step 6: Final answer
    x = 14,684.98

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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.