Home / 12,345.67-18,523.77-8,187.13

Finding the Fourth Proportional to 12,345.67, 18,523.77 and 8,187.13

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Solution

The fourth proportional to 12,345.67, 18,523.77 and 8,187.13 is: 12,284.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.67 : 18,523.77 = 8,187.13 : x
  2. Step 2: Convert to fraction form
    12,345.67/18,523.77 = 8,187.13/x
  3. Step 3: Cross multiply
    12,345.67x = 18,523.77 × 8,187.13
  4. Step 4: Simplify right side
    12,345.67x = 151,656,513.08
  5. Step 5: Solve for x
    x = 151,656,513.08/12,345.67
  6. Step 6: Final answer
    x = 12,284.19

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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.