Home / 12,045.52-18,071.84-5,120.56

Finding the Fourth Proportional to 12,045.52, 18,071.84 and 5,120.56

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Solution

The fourth proportional to 12,045.52, 18,071.84 and 5,120.56 is: 7,682.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,045.52 : 18,071.84 = 5,120.56 : x
  2. Step 2: Convert to fraction form
    12,045.52/18,071.84 = 5,120.56/x
  3. Step 3: Cross multiply
    12,045.52x = 18,071.84 × 5,120.56
  4. Step 4: Simplify right side
    12,045.52x = 92,537,941.03
  5. Step 5: Solve for x
    x = 92,537,941.03/12,045.52
  6. Step 6: Final answer
    x = 7,682.35

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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.