Home / 19,771.48-27,274.42-13,395.89

Finding the Fourth Proportional to 19,771.48, 27,274.42 and 13,395.89

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Solution

The fourth proportional to 19,771.48, 27,274.42 and 13,395.89 is: 18,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,771.48 : 27,274.42 = 13,395.89 : x
  2. Step 2: Convert to fraction form
    19,771.48/27,274.42 = 13,395.89/x
  3. Step 3: Cross multiply
    19,771.48x = 27,274.42 × 13,395.89
  4. Step 4: Simplify right side
    19,771.48x = 365,364,985.62
  5. Step 5: Solve for x
    x = 365,364,985.62/19,771.48
  6. Step 6: Final answer
    x = 18,479.40

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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.