Home / 19,355.50-29,038.45-15,421.61

Finding the Fourth Proportional to 19,355.50, 29,038.45 and 15,421.61

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Solution

The fourth proportional to 19,355.50, 29,038.45 and 15,421.61 is: 23,136.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,355.50 : 29,038.45 = 15,421.61 : x
  2. Step 2: Convert to fraction form
    19,355.50/29,038.45 = 15,421.61/x
  3. Step 3: Cross multiply
    19,355.50x = 29,038.45 × 15,421.61
  4. Step 4: Simplify right side
    19,355.50x = 447,819,467.16
  5. Step 5: Solve for x
    x = 447,819,467.16/19,355.50
  6. Step 6: Final answer
    x = 23,136.55

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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.