Home / 11,209.40-16,814.10-9,980.60

Finding the Fourth Proportional to 11,209.40, 16,814.10 and 9,980.60

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Solution

The fourth proportional to 11,209.40, 16,814.10 and 9,980.60 is: 14,970.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.40 : 16,814.10 = 9,980.60 : x
  2. Step 2: Convert to fraction form
    11,209.40/16,814.10 = 9,980.60/x
  3. Step 3: Cross multiply
    11,209.40x = 16,814.10 × 9,980.60
  4. Step 4: Simplify right side
    11,209.40x = 167,814,806.46
  5. Step 5: Solve for x
    x = 167,814,806.46/11,209.40
  6. Step 6: Final answer
    x = 14,970.90

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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.