Home / 30,568.24-42,187.80-19,988.56

Finding the Fourth Proportional to 30,568.24, 42,187.80 and 19,988.56

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Solution

The fourth proportional to 30,568.24, 42,187.80 and 19,988.56 is: 27,586.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,568.24 : 42,187.80 = 19,988.56 : x
  2. Step 2: Convert to fraction form
    30,568.24/42,187.80 = 19,988.56/x
  3. Step 3: Cross multiply
    30,568.24x = 42,187.80 × 19,988.56
  4. Step 4: Simplify right side
    30,568.24x = 843,273,371.57
  5. Step 5: Solve for x
    x = 843,273,371.57/30,568.24
  6. Step 6: Final answer
    x = 27,586.59

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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.