Home / 20,320.40-27,983.64-16,750.80

Finding the Fourth Proportional to 20,320.40, 27,983.64 and 16,750.80

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Solution

The fourth proportional to 20,320.40, 27,983.64 and 16,750.80 is: 23,067.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.40 : 27,983.64 = 16,750.80 : x
  2. Step 2: Convert to fraction form
    20,320.40/27,983.64 = 16,750.80/x
  3. Step 3: Cross multiply
    20,320.40x = 27,983.64 × 16,750.80
  4. Step 4: Simplify right side
    20,320.40x = 468,748,356.91
  5. Step 5: Solve for x
    x = 468,748,356.91/20,320.40
  6. Step 6: Final answer
    x = 23,067.87

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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.