Home / 11,988.40-18,004.20-11,599.60

Finding the Fourth Proportional to 11,988.40, 18,004.20 and 11,599.60

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Solution

The fourth proportional to 11,988.40, 18,004.20 and 11,599.60 is: 17,420.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.40 : 18,004.20 = 11,599.60 : x
  2. Step 2: Convert to fraction form
    11,988.40/18,004.20 = 11,599.60/x
  3. Step 3: Cross multiply
    11,988.40x = 18,004.20 × 11,599.60
  4. Step 4: Simplify right side
    11,988.40x = 208,841,518.32
  5. Step 5: Solve for x
    x = 208,841,518.32/11,988.40
  6. Step 6: Final answer
    x = 17,420.30

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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.