Home / 31,437.84-43,390.82-19,945.28

Finding the Fourth Proportional to 31,437.84, 43,390.82 and 19,945.28

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Solution

The fourth proportional to 31,437.84, 43,390.82 and 19,945.28 is: 27,528.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,437.84 : 43,390.82 = 19,945.28 : x
  2. Step 2: Convert to fraction form
    31,437.84/43,390.82 = 19,945.28/x
  3. Step 3: Cross multiply
    31,437.84x = 43,390.82 × 19,945.28
  4. Step 4: Simplify right side
    31,437.84x = 865,442,054.33
  5. Step 5: Solve for x
    x = 865,442,054.33/31,437.84
  6. Step 6: Final answer
    x = 27,528.67

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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.