Home / 13,606.26-18,775.62-7,638.84

Finding the Fourth Proportional to 13,606.26, 18,775.62 and 7,638.84

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Solution

The fourth proportional to 13,606.26, 18,775.62 and 7,638.84 is: 10,541.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.26 : 18,775.62 = 7,638.84 : x
  2. Step 2: Convert to fraction form
    13,606.26/18,775.62 = 7,638.84/x
  3. Step 3: Cross multiply
    13,606.26x = 18,775.62 × 7,638.84
  4. Step 4: Simplify right side
    13,606.26x = 143,423,957.08
  5. Step 5: Solve for x
    x = 143,423,957.08/13,606.26
  6. Step 6: Final answer
    x = 10,541.03

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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.