Home / 18,211.79-25,130.68-13,434.33

Finding the Fourth Proportional to 18,211.79, 25,130.68 and 13,434.33

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Solution

The fourth proportional to 18,211.79, 25,130.68 and 13,434.33 is: 18,538.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.79 : 25,130.68 = 13,434.33 : x
  2. Step 2: Convert to fraction form
    18,211.79/25,130.68 = 13,434.33/x
  3. Step 3: Cross multiply
    18,211.79x = 25,130.68 × 13,434.33
  4. Step 4: Simplify right side
    18,211.79x = 337,613,876.00
  5. Step 5: Solve for x
    x = 337,613,876.00/18,211.79
  6. Step 6: Final answer
    x = 18,538.21

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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.