Home / 10,998.16-15,176.10-7,021.60

Finding the Fourth Proportional to 10,998.16, 15,176.10 and 7,021.60

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Solution

The fourth proportional to 10,998.16, 15,176.10 and 7,021.60 is: 9,688.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,998.16 : 15,176.10 = 7,021.60 : x
  2. Step 2: Convert to fraction form
    10,998.16/15,176.10 = 7,021.60/x
  3. Step 3: Cross multiply
    10,998.16x = 15,176.10 × 7,021.60
  4. Step 4: Simplify right side
    10,998.16x = 106,560,503.76
  5. Step 5: Solve for x
    x = 106,560,503.76/10,998.16
  6. Step 6: Final answer
    x = 9,688.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.