Home / 19,965.42-29,871.99-12,038.76

Finding the Fourth Proportional to 19,965.42, 29,871.99 and 12,038.76

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Solution

The fourth proportional to 19,965.42, 29,871.99 and 12,038.76 is: 18,012.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,965.42 : 29,871.99 = 12,038.76 : x
  2. Step 2: Convert to fraction form
    19,965.42/29,871.99 = 12,038.76/x
  3. Step 3: Cross multiply
    19,965.42x = 29,871.99 × 12,038.76
  4. Step 4: Simplify right side
    19,965.42x = 359,621,718.33
  5. Step 5: Solve for x
    x = 359,621,718.33/19,965.42
  6. Step 6: Final answer
    x = 18,012.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.