Home / 14,280.90-21,422.19-5,515.86

Finding the Fourth Proportional to 14,280.90, 21,422.19 and 5,515.86

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Solution

The fourth proportional to 14,280.90, 21,422.19 and 5,515.86 is: 8,274.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.90 : 21,422.19 = 5,515.86 : x
  2. Step 2: Convert to fraction form
    14,280.90/21,422.19 = 5,515.86/x
  3. Step 3: Cross multiply
    14,280.90x = 21,422.19 × 5,515.86
  4. Step 4: Simplify right side
    14,280.90x = 118,161,800.93
  5. Step 5: Solve for x
    x = 118,161,800.93/14,280.90
  6. Step 6: Final answer
    x = 8,274.11

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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.