Home / 18,191.48-25,090.81-12,528.03

Finding the Fourth Proportional to 18,191.48, 25,090.81 and 12,528.03

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Solution

The fourth proportional to 18,191.48, 25,090.81 and 12,528.03 is: 17,279.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191.48 : 25,090.81 = 12,528.03 : x
  2. Step 2: Convert to fraction form
    18,191.48/25,090.81 = 12,528.03/x
  3. Step 3: Cross multiply
    18,191.48x = 25,090.81 × 12,528.03
  4. Step 4: Simplify right side
    18,191.48x = 314,338,420.40
  5. Step 5: Solve for x
    x = 314,338,420.40/18,191.48
  6. Step 6: Final answer
    x = 17,279.43

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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.