Home / 12,187.05-18,277.53-4,689.08

Finding the Fourth Proportional to 12,187.05, 18,277.53 and 4,689.08

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Solution

The fourth proportional to 12,187.05, 18,277.53 and 4,689.08 is: 7,032.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.05 : 18,277.53 = 4,689.08 : x
  2. Step 2: Convert to fraction form
    12,187.05/18,277.53 = 4,689.08/x
  3. Step 3: Cross multiply
    12,187.05x = 18,277.53 × 4,689.08
  4. Step 4: Simplify right side
    12,187.05x = 85,704,800.37
  5. Step 5: Solve for x
    x = 85,704,800.37/12,187.05
  6. Step 6: Final answer
    x = 7,032.45

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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.