Home / 19,913.04-29,840.40-12,103.02

Finding the Fourth Proportional to 19,913.04, 29,840.40 and 12,103.02

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Solution

The fourth proportional to 19,913.04, 29,840.40 and 12,103.02 is: 18,136.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,913.04 : 29,840.40 = 12,103.02 : x
  2. Step 2: Convert to fraction form
    19,913.04/29,840.40 = 12,103.02/x
  3. Step 3: Cross multiply
    19,913.04x = 29,840.40 × 12,103.02
  4. Step 4: Simplify right side
    19,913.04x = 361,158,958.01
  5. Step 5: Solve for x
    x = 361,158,958.01/19,913.04
  6. Step 6: Final answer
    x = 18,136.81

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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.