Home / 10,427.58-15,640.79-2,931.64

Finding the Fourth Proportional to 10,427.58, 15,640.79 and 2,931.64

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Solution

The fourth proportional to 10,427.58, 15,640.79 and 2,931.64 is: 4,397.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,427.58 : 15,640.79 = 2,931.64 : x
  2. Step 2: Convert to fraction form
    10,427.58/15,640.79 = 2,931.64/x
  3. Step 3: Cross multiply
    10,427.58x = 15,640.79 × 2,931.64
  4. Step 4: Simplify right side
    10,427.58x = 45,853,165.60
  5. Step 5: Solve for x
    x = 45,853,165.60/10,427.58
  6. Step 6: Final answer
    x = 4,397.30

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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.