Home / 10,659.60-15,989.40-5,111.64

Finding the Fourth Proportional to 10,659.60, 15,989.40 and 5,111.64

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Solution

The fourth proportional to 10,659.60, 15,989.40 and 5,111.64 is: 7,667.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,659.60 : 15,989.40 = 5,111.64 : x
  2. Step 2: Convert to fraction form
    10,659.60/15,989.40 = 5,111.64/x
  3. Step 3: Cross multiply
    10,659.60x = 15,989.40 × 5,111.64
  4. Step 4: Simplify right side
    10,659.60x = 81,732,056.62
  5. Step 5: Solve for x
    x = 81,732,056.62/10,659.60
  6. Step 6: Final answer
    x = 7,667.46

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Similar ratio
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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.