Home / 33,138.80-45,731.18-19,709.76

Finding the Fourth Proportional to 33,138.80, 45,731.18 and 19,709.76

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Solution

The fourth proportional to 33,138.80, 45,731.18 and 19,709.76 is: 27,199.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,138.80 : 45,731.18 = 19,709.76 : x
  2. Step 2: Convert to fraction form
    33,138.80/45,731.18 = 19,709.76/x
  3. Step 3: Cross multiply
    33,138.80x = 45,731.18 × 19,709.76
  4. Step 4: Simplify right side
    33,138.80x = 901,350,631.59
  5. Step 5: Solve for x
    x = 901,350,631.59/33,138.80
  6. Step 6: Final answer
    x = 27,199.25

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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.