Home / 15,083.05-20,813.66-9,111.19

Finding the Fourth Proportional to 15,083.05, 20,813.66 and 9,111.19

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Solution

The fourth proportional to 15,083.05, 20,813.66 and 9,111.19 is: 12,572.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,083.05 : 20,813.66 = 9,111.19 : x
  2. Step 2: Convert to fraction form
    15,083.05/20,813.66 = 9,111.19/x
  3. Step 3: Cross multiply
    15,083.05x = 20,813.66 × 9,111.19
  4. Step 4: Simplify right side
    15,083.05x = 189,637,106.79
  5. Step 5: Solve for x
    x = 189,637,106.79/15,083.05
  6. Step 6: Final answer
    x = 12,572.87

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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.