Home / 20,973.70-28,944.69-13,018.48

Finding the Fourth Proportional to 20,973.70, 28,944.69 and 13,018.48

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Solution

The fourth proportional to 20,973.70, 28,944.69 and 13,018.48 is: 17,966.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.70 : 28,944.69 = 13,018.48 : x
  2. Step 2: Convert to fraction form
    20,973.70/28,944.69 = 13,018.48/x
  3. Step 3: Cross multiply
    20,973.70x = 28,944.69 × 13,018.48
  4. Step 4: Simplify right side
    20,973.70x = 376,815,867.87
  5. Step 5: Solve for x
    x = 376,815,867.87/20,973.70
  6. Step 6: Final answer
    x = 17,966.11

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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.