Home / 13,331.01-18,421.14-11,416.49

Finding the Fourth Proportional to 13,331.01, 18,421.14 and 11,416.49

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Solution

The fourth proportional to 13,331.01, 18,421.14 and 11,416.49 is: 15,775.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.01 : 18,421.14 = 11,416.49 : x
  2. Step 2: Convert to fraction form
    13,331.01/18,421.14 = 11,416.49/x
  3. Step 3: Cross multiply
    13,331.01x = 18,421.14 × 11,416.49
  4. Step 4: Simplify right side
    13,331.01x = 210,304,668.49
  5. Step 5: Solve for x
    x = 210,304,668.49/13,331.01
  6. Step 6: Final answer
    x = 15,775.60

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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.