Home / 10,455.56-15,680.46-7,509.32

Finding the Fourth Proportional to 10,455.56, 15,680.46 and 7,509.32

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Solution

The fourth proportional to 10,455.56, 15,680.46 and 7,509.32 is: 11,261.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,455.56 : 15,680.46 = 7,509.32 : x
  2. Step 2: Convert to fraction form
    10,455.56/15,680.46 = 7,509.32/x
  3. Step 3: Cross multiply
    10,455.56x = 15,680.46 × 7,509.32
  4. Step 4: Simplify right side
    10,455.56x = 117,749,591.89
  5. Step 5: Solve for x
    x = 117,749,591.89/10,455.56
  6. Step 6: Final answer
    x = 11,261.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.