Home / 30,569.24-42,189.18-19,989.56

Finding the Fourth Proportional to 30,569.24, 42,189.18 and 19,989.56

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Solution

The fourth proportional to 30,569.24, 42,189.18 and 19,989.56 is: 27,587.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,569.24 : 42,189.18 = 19,989.56 : x
  2. Step 2: Convert to fraction form
    30,569.24/42,189.18 = 19,989.56/x
  3. Step 3: Cross multiply
    30,569.24x = 42,189.18 × 19,989.56
  4. Step 4: Simplify right side
    30,569.24x = 843,343,144.96
  5. Step 5: Solve for x
    x = 843,343,144.96/30,569.24
  6. Step 6: Final answer
    x = 27,587.97

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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.