Home / 13,669.03-18,740.23-13,419.91

Finding the Fourth Proportional to 13,669.03, 18,740.23 and 13,419.91

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Solution

The fourth proportional to 13,669.03, 18,740.23 and 13,419.91 is: 18,398.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,669.03 : 18,740.23 = 13,419.91 : x
  2. Step 2: Convert to fraction form
    13,669.03/18,740.23 = 13,419.91/x
  3. Step 3: Cross multiply
    13,669.03x = 18,740.23 × 13,419.91
  4. Step 4: Simplify right side
    13,669.03x = 251,492,132.88
  5. Step 5: Solve for x
    x = 251,492,132.88/13,669.03
  6. Step 6: Final answer
    x = 18,398.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.