Home / 10,102.56-13,995.60-9,860.64

Finding the Fourth Proportional to 10,102.56, 13,995.60 and 9,860.64

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Solution

The fourth proportional to 10,102.56, 13,995.60 and 9,860.64 is: 13,660.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,102.56 : 13,995.60 = 9,860.64 : x
  2. Step 2: Convert to fraction form
    10,102.56/13,995.60 = 9,860.64/x
  3. Step 3: Cross multiply
    10,102.56x = 13,995.60 × 9,860.64
  4. Step 4: Simplify right side
    10,102.56x = 138,005,573.18
  5. Step 5: Solve for x
    x = 138,005,573.18/10,102.56
  6. Step 6: Final answer
    x = 13,660.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.