Home / 19,877.43-27,419.43-12,412.47

Finding the Fourth Proportional to 19,877.43, 27,419.43 and 12,412.47

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Solution

The fourth proportional to 19,877.43, 27,419.43 and 12,412.47 is: 17,122.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,877.43 : 27,419.43 = 12,412.47 : x
  2. Step 2: Convert to fraction form
    19,877.43/27,419.43 = 12,412.47/x
  3. Step 3: Cross multiply
    19,877.43x = 27,419.43 × 12,412.47
  4. Step 4: Simplify right side
    19,877.43x = 340,342,852.29
  5. Step 5: Solve for x
    x = 340,342,852.29/19,877.43
  6. Step 6: Final answer
    x = 17,122.08

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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.