Home / 10,982.81-15,155.56-6,790.25

Finding the Fourth Proportional to 10,982.81, 15,155.56 and 6,790.25

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Solution

The fourth proportional to 10,982.81, 15,155.56 and 6,790.25 is: 9,370.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,982.81 : 15,155.56 = 6,790.25 : x
  2. Step 2: Convert to fraction form
    10,982.81/15,155.56 = 6,790.25/x
  3. Step 3: Cross multiply
    10,982.81x = 15,155.56 × 6,790.25
  4. Step 4: Simplify right side
    10,982.81x = 102,910,041.29
  5. Step 5: Solve for x
    x = 102,910,041.29/10,982.81
  6. Step 6: Final answer
    x = 9,370.10

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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.