Home / 13,654.36-18,845.42-13,031.07

Finding the Fourth Proportional to 13,654.36, 18,845.42 and 13,031.07

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Solution

The fourth proportional to 13,654.36, 18,845.42 and 13,031.07 is: 17,985.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.36 : 18,845.42 = 13,031.07 : x
  2. Step 2: Convert to fraction form
    13,654.36/18,845.42 = 13,031.07/x
  3. Step 3: Cross multiply
    13,654.36x = 18,845.42 × 13,031.07
  4. Step 4: Simplify right side
    13,654.36x = 245,575,987.20
  5. Step 5: Solve for x
    x = 245,575,987.20/13,654.36
  6. Step 6: Final answer
    x = 17,985.17

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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.