Home / 28,681.40-43,022.82-13,887.56

Finding the Fourth Proportional to 28,681.40, 43,022.82 and 13,887.56

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Solution

The fourth proportional to 28,681.40, 43,022.82 and 13,887.56 is: 20,831.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,681.40 : 43,022.82 = 13,887.56 : x
  2. Step 2: Convert to fraction form
    28,681.40/43,022.82 = 13,887.56/x
  3. Step 3: Cross multiply
    28,681.40x = 43,022.82 × 13,887.56
  4. Step 4: Simplify right side
    28,681.40x = 597,481,994.12
  5. Step 5: Solve for x
    x = 597,481,994.12/28,681.40
  6. Step 6: Final answer
    x = 20,831.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.