Home / 19,679.04-27,163.10-13,395.08

Finding the Fourth Proportional to 19,679.04, 27,163.10 and 13,395.08

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Solution

The fourth proportional to 19,679.04, 27,163.10 and 13,395.08 is: 18,489.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,679.04 : 27,163.10 = 13,395.08 : x
  2. Step 2: Convert to fraction form
    19,679.04/27,163.10 = 13,395.08/x
  3. Step 3: Cross multiply
    19,679.04x = 27,163.10 × 13,395.08
  4. Step 4: Simplify right side
    19,679.04x = 363,851,897.55
  5. Step 5: Solve for x
    x = 363,851,897.55/19,679.04
  6. Step 6: Final answer
    x = 18,489.31

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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.