Home / 11,507.07-15,880.25-6,471.51

Finding the Fourth Proportional to 11,507.07, 15,880.25 and 6,471.51

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Solution

The fourth proportional to 11,507.07, 15,880.25 and 6,471.51 is: 8,930.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,507.07 : 15,880.25 = 6,471.51 : x
  2. Step 2: Convert to fraction form
    11,507.07/15,880.25 = 6,471.51/x
  3. Step 3: Cross multiply
    11,507.07x = 15,880.25 × 6,471.51
  4. Step 4: Simplify right side
    11,507.07x = 102,769,164.32
  5. Step 5: Solve for x
    x = 102,769,164.32/11,507.07
  6. Step 6: Final answer
    x = 8,930.96

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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.