Home / 13,549.68-18,696.42-7,885.35

Finding the Fourth Proportional to 13,549.68, 18,696.42 and 7,885.35

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Solution

The fourth proportional to 13,549.68, 18,696.42 and 7,885.35 is: 10,880.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,549.68 : 18,696.42 = 7,885.35 : x
  2. Step 2: Convert to fraction form
    13,549.68/18,696.42 = 7,885.35/x
  3. Step 3: Cross multiply
    13,549.68x = 18,696.42 × 7,885.35
  4. Step 4: Simplify right side
    13,549.68x = 147,427,815.45
  5. Step 5: Solve for x
    x = 147,427,815.45/13,549.68
  6. Step 6: Final answer
    x = 10,880.54

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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.