Home / 12,715.64-19,077.60-6,142.56

Finding the Fourth Proportional to 12,715.64, 19,077.60 and 6,142.56

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Solution

The fourth proportional to 12,715.64, 19,077.60 and 6,142.56 is: 9,215.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.64 : 19,077.60 = 6,142.56 : x
  2. Step 2: Convert to fraction form
    12,715.64/19,077.60 = 6,142.56/x
  3. Step 3: Cross multiply
    12,715.64x = 19,077.60 × 6,142.56
  4. Step 4: Simplify right side
    12,715.64x = 117,185,302.66
  5. Step 5: Solve for x
    x = 117,185,302.66/12,715.64
  6. Step 6: Final answer
    x = 9,215.84

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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.