Home / 19,816.59-27,365.40-12,755.28

Finding the Fourth Proportional to 19,816.59, 27,365.40 and 12,755.28

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Solution

The fourth proportional to 19,816.59, 27,365.40 and 12,755.28 is: 17,614.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,816.59 : 27,365.40 = 12,755.28 : x
  2. Step 2: Convert to fraction form
    19,816.59/27,365.40 = 12,755.28/x
  3. Step 3: Cross multiply
    19,816.59x = 27,365.40 × 12,755.28
  4. Step 4: Simplify right side
    19,816.59x = 349,053,339.31
  5. Step 5: Solve for x
    x = 349,053,339.31/19,816.59
  6. Step 6: Final answer
    x = 17,614.20

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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.