Home / 20,943.15-28,903.15-11,993.46

Finding the Fourth Proportional to 20,943.15, 28,903.15 and 11,993.46

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Solution

The fourth proportional to 20,943.15, 28,903.15 and 11,993.46 is: 16,551.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.15 : 28,903.15 = 11,993.46 : x
  2. Step 2: Convert to fraction form
    20,943.15/28,903.15 = 11,993.46/x
  3. Step 3: Cross multiply
    20,943.15x = 28,903.15 × 11,993.46
  4. Step 4: Simplify right side
    20,943.15x = 346,648,773.40
  5. Step 5: Solve for x
    x = 346,648,773.40/20,943.15
  6. Step 6: Final answer
    x = 16,551.89

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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.