Home / 18,192.90-25,109.64-11,390.08

Finding the Fourth Proportional to 18,192.90, 25,109.64 and 11,390.08

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Solution

The fourth proportional to 18,192.90, 25,109.64 and 11,390.08 is: 15,720.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,192.90 : 25,109.64 = 11,390.08 : x
  2. Step 2: Convert to fraction form
    18,192.90/25,109.64 = 11,390.08/x
  3. Step 3: Cross multiply
    18,192.90x = 25,109.64 × 11,390.08
  4. Step 4: Simplify right side
    18,192.90x = 286,000,808.37
  5. Step 5: Solve for x
    x = 286,000,808.37/18,192.90
  6. Step 6: Final answer
    x = 15,720.46

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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.