Home / 14,280.68-21,420.20-3,750.68

Finding the Fourth Proportional to 14,280.68, 21,420.20 and 3,750.68

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Solution

The fourth proportional to 14,280.68, 21,420.20 and 3,750.68 is: 5,625.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.68 : 21,420.20 = 3,750.68 : x
  2. Step 2: Convert to fraction form
    14,280.68/21,420.20 = 3,750.68/x
  3. Step 3: Cross multiply
    14,280.68x = 21,420.20 × 3,750.68
  4. Step 4: Simplify right side
    14,280.68x = 80,340,315.74
  5. Step 5: Solve for x
    x = 80,340,315.74/14,280.68
  6. Step 6: Final answer
    x = 5,625.80

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1.5x scale

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.