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Finding the Fourth Proportional to 10,201.60, 15,302.40 and 7,091.20

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Solution

The fourth proportional to 10,201.60, 15,302.40 and 7,091.20 is: 10,636.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,201.60 : 15,302.40 = 7,091.20 : x
  2. Step 2: Convert to fraction form
    10,201.60/15,302.40 = 7,091.20/x
  3. Step 3: Cross multiply
    10,201.60x = 15,302.40 × 7,091.20
  4. Step 4: Simplify right side
    10,201.60x = 108,512,378.88
  5. Step 5: Solve for x
    x = 108,512,378.88/10,201.60
  6. Step 6: Final answer
    x = 10,636.80

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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.