Home / 13,423.02-20,136.69-4,539.21

Finding the Fourth Proportional to 13,423.02, 20,136.69 and 4,539.21

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Solution

The fourth proportional to 13,423.02, 20,136.69 and 4,539.21 is: 6,809.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.02 : 20,136.69 = 4,539.21 : x
  2. Step 2: Convert to fraction form
    13,423.02/20,136.69 = 4,539.21/x
  3. Step 3: Cross multiply
    13,423.02x = 20,136.69 × 4,539.21
  4. Step 4: Simplify right side
    13,423.02x = 91,404,664.61
  5. Step 5: Solve for x
    x = 91,404,664.61/13,423.02
  6. Step 6: Final answer
    x = 6,809.55

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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.