Home / 13,238.86-18,269.65-7,189.11

Finding the Fourth Proportional to 13,238.86, 18,269.65 and 7,189.11

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Solution

The fourth proportional to 13,238.86, 18,269.65 and 7,189.11 is: 9,920.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.86 : 18,269.65 = 7,189.11 : x
  2. Step 2: Convert to fraction form
    13,238.86/18,269.65 = 7,189.11/x
  3. Step 3: Cross multiply
    13,238.86x = 18,269.65 × 7,189.11
  4. Step 4: Simplify right side
    13,238.86x = 131,342,523.51
  5. Step 5: Solve for x
    x = 131,342,523.51/13,238.86
  6. Step 6: Final answer
    x = 9,920.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.