Home / 13,569.12-18,725.28-8,790.83

Finding the Fourth Proportional to 13,569.12, 18,725.28 and 8,790.83

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Solution

The fourth proportional to 13,569.12, 18,725.28 and 8,790.83 is: 12,131.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,569.12 : 18,725.28 = 8,790.83 : x
  2. Step 2: Convert to fraction form
    13,569.12/18,725.28 = 8,790.83/x
  3. Step 3: Cross multiply
    13,569.12x = 18,725.28 × 8,790.83
  4. Step 4: Simplify right side
    13,569.12x = 164,610,696.81
  5. Step 5: Solve for x
    x = 164,610,696.81/13,569.12
  6. Step 6: Final answer
    x = 12,131.27

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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.