Home / 14,148.20-21,216.90-4,284.20

Finding the Fourth Proportional to 14,148.20, 21,216.90 and 4,284.20

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Solution

The fourth proportional to 14,148.20, 21,216.90 and 4,284.20 is: 6,424.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,148.20 : 21,216.90 = 4,284.20 : x
  2. Step 2: Convert to fraction form
    14,148.20/21,216.90 = 4,284.20/x
  3. Step 3: Cross multiply
    14,148.20x = 21,216.90 × 4,284.20
  4. Step 4: Simplify right side
    14,148.20x = 90,897,442.98
  5. Step 5: Solve for x
    x = 90,897,442.98/14,148.20
  6. Step 6: Final answer
    x = 6,424.66

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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.