Home / 10,989.74-15,165.41-6,451.81

Finding the Fourth Proportional to 10,989.74, 15,165.41 and 6,451.81

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Solution

The fourth proportional to 10,989.74, 15,165.41 and 6,451.81 is: 8,903.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.74 : 15,165.41 = 6,451.81 : x
  2. Step 2: Convert to fraction form
    10,989.74/15,165.41 = 6,451.81/x
  3. Step 3: Cross multiply
    10,989.74x = 15,165.41 × 6,451.81
  4. Step 4: Simplify right side
    10,989.74x = 97,844,273.72
  5. Step 5: Solve for x
    x = 97,844,273.72/10,989.74
  6. Step 6: Final answer
    x = 8,903.24

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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.