Home / 11,688.40-17,532.60-9,938.80

Finding the Fourth Proportional to 11,688.40, 17,532.60 and 9,938.80

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Solution

The fourth proportional to 11,688.40, 17,532.60 and 9,938.80 is: 14,908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.40 : 17,532.60 = 9,938.80 : x
  2. Step 2: Convert to fraction form
    11,688.40/17,532.60 = 9,938.80/x
  3. Step 3: Cross multiply
    11,688.40x = 17,532.60 × 9,938.80
  4. Step 4: Simplify right side
    11,688.40x = 174,253,004.88
  5. Step 5: Solve for x
    x = 174,253,004.88/11,688.40
  6. Step 6: Final answer
    x = 14,908.20

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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.