Home / 13,309.11-18,360.68-9,328.77

Finding the Fourth Proportional to 13,309.11, 18,360.68 and 9,328.77

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Solution

The fourth proportional to 13,309.11, 18,360.68 and 9,328.77 is: 12,869.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.11 : 18,360.68 = 9,328.77 : x
  2. Step 2: Convert to fraction form
    13,309.11/18,360.68 = 9,328.77/x
  3. Step 3: Cross multiply
    13,309.11x = 18,360.68 × 9,328.77
  4. Step 4: Simplify right side
    13,309.11x = 171,282,514.12
  5. Step 5: Solve for x
    x = 171,282,514.12/13,309.11
  6. Step 6: Final answer
    x = 12,869.57

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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.