Home / 12,538.45-18,800.73-5,148.11

Finding the Fourth Proportional to 12,538.45, 18,800.73 and 5,148.11

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Solution

The fourth proportional to 12,538.45, 18,800.73 and 5,148.11 is: 7,719.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,538.45 : 18,800.73 = 5,148.11 : x
  2. Step 2: Convert to fraction form
    12,538.45/18,800.73 = 5,148.11/x
  3. Step 3: Cross multiply
    12,538.45x = 18,800.73 × 5,148.11
  4. Step 4: Simplify right side
    12,538.45x = 96,788,226.12
  5. Step 5: Solve for x
    x = 96,788,226.12/12,538.45
  6. Step 6: Final answer
    x = 7,719.31

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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.