Home / 10,928.52-15,080.78-6,450.64

Finding the Fourth Proportional to 10,928.52, 15,080.78 and 6,450.64

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Solution

The fourth proportional to 10,928.52, 15,080.78 and 6,450.64 is: 8,901.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,928.52 : 15,080.78 = 6,450.64 : x
  2. Step 2: Convert to fraction form
    10,928.52/15,080.78 = 6,450.64/x
  3. Step 3: Cross multiply
    10,928.52x = 15,080.78 × 6,450.64
  4. Step 4: Simplify right side
    10,928.52x = 97,280,661.12
  5. Step 5: Solve for x
    x = 97,280,661.12/10,928.52
  6. Step 6: Final answer
    x = 8,901.54

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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.