Home / 19,877.59-27,425.55-13,161.07

Finding the Fourth Proportional to 19,877.59, 27,425.55 and 13,161.07

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Solution

The fourth proportional to 19,877.59, 27,425.55 and 13,161.07 is: 18,158.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,877.59 : 27,425.55 = 13,161.07 : x
  2. Step 2: Convert to fraction form
    19,877.59/27,425.55 = 13,161.07/x
  3. Step 3: Cross multiply
    19,877.59x = 27,425.55 × 13,161.07
  4. Step 4: Simplify right side
    19,877.59x = 360,949,583.34
  5. Step 5: Solve for x
    x = 360,949,583.34/19,877.59
  6. Step 6: Final answer
    x = 18,158.62

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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.