Home / 30,871.26-42,586.68-19,521.63

Finding the Fourth Proportional to 30,871.26, 42,586.68 and 19,521.63

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Solution

The fourth proportional to 30,871.26, 42,586.68 and 19,521.63 is: 26,929.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,871.26 : 42,586.68 = 19,521.63 : x
  2. Step 2: Convert to fraction form
    30,871.26/42,586.68 = 19,521.63/x
  3. Step 3: Cross multiply
    30,871.26x = 42,586.68 × 19,521.63
  4. Step 4: Simplify right side
    30,871.26x = 831,361,409.89
  5. Step 5: Solve for x
    x = 831,361,409.89/30,871.26
  6. Step 6: Final answer
    x = 26,929.95

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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.