Home / 19,877.80-27,432.78-13,151.68

Finding the Fourth Proportional to 19,877.80, 27,432.78 and 13,151.68

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Solution

The fourth proportional to 19,877.80, 27,432.78 and 13,151.68 is: 18,150.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,877.80 : 27,432.78 = 13,151.68 : x
  2. Step 2: Convert to fraction form
    19,877.80/27,432.78 = 13,151.68/x
  3. Step 3: Cross multiply
    19,877.80x = 27,432.78 × 13,151.68
  4. Step 4: Simplify right side
    19,877.80x = 360,787,144.07
  5. Step 5: Solve for x
    x = 360,787,144.07/19,877.80
  6. Step 6: Final answer
    x = 18,150.26

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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.