Home / 12,475.40-18,696.85-5,071.21

Finding the Fourth Proportional to 12,475.40, 18,696.85 and 5,071.21

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Solution

The fourth proportional to 12,475.40, 18,696.85 and 5,071.21 is: 7,600.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,475.40 : 18,696.85 = 5,071.21 : x
  2. Step 2: Convert to fraction form
    12,475.40/18,696.85 = 5,071.21/x
  3. Step 3: Cross multiply
    12,475.40x = 18,696.85 × 5,071.21
  4. Step 4: Simplify right side
    12,475.40x = 94,815,652.69
  5. Step 5: Solve for x
    x = 94,815,652.69/12,475.40
  6. Step 6: Final answer
    x = 7,600.21

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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.