Home / 30,912.31-42,643.29-19,562.68

Finding the Fourth Proportional to 30,912.31, 42,643.29 and 19,562.68

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Solution

The fourth proportional to 30,912.31, 42,643.29 and 19,562.68 is: 26,986.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,912.31 : 42,643.29 = 19,562.68 : x
  2. Step 2: Convert to fraction form
    30,912.31/42,643.29 = 19,562.68/x
  3. Step 3: Cross multiply
    30,912.31x = 42,643.29 × 19,562.68
  4. Step 4: Simplify right side
    30,912.31x = 834,217,036.42
  5. Step 5: Solve for x
    x = 834,217,036.42/30,912.31
  6. Step 6: Final answer
    x = 26,986.56

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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.