Home / 30,567.24-42,186.42-19,987.56

Finding the Fourth Proportional to 30,567.24, 42,186.42 and 19,987.56

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Solution

The fourth proportional to 30,567.24, 42,186.42 and 19,987.56 is: 27,585.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,567.24 : 42,186.42 = 19,987.56 : x
  2. Step 2: Convert to fraction form
    30,567.24/42,186.42 = 19,987.56/x
  3. Step 3: Cross multiply
    30,567.24x = 42,186.42 × 19,987.56
  4. Step 4: Simplify right side
    30,567.24x = 843,203,600.94
  5. Step 5: Solve for x
    x = 843,203,600.94/30,567.24
  6. Step 6: Final answer
    x = 27,585.21

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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.