Home / 14,201.21-21,285.65-8,642.31

Finding the Fourth Proportional to 14,201.21, 21,285.65 and 8,642.31

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Solution

The fourth proportional to 14,201.21, 21,285.65 and 8,642.31 is: 12,953.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,201.21 : 21,285.65 = 8,642.31 : x
  2. Step 2: Convert to fraction form
    14,201.21/21,285.65 = 8,642.31/x
  3. Step 3: Cross multiply
    14,201.21x = 21,285.65 × 8,642.31
  4. Step 4: Simplify right side
    14,201.21x = 183,957,142.64
  5. Step 5: Solve for x
    x = 183,957,142.64/14,201.21
  6. Step 6: Final answer
    x = 12,953.63

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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.