Home / 23,108.18-31,889.41-12,899.68

Finding the Fourth Proportional to 23,108.18, 31,889.41 and 12,899.68

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Solution

The fourth proportional to 23,108.18, 31,889.41 and 12,899.68 is: 17,801.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,108.18 : 31,889.41 = 12,899.68 : x
  2. Step 2: Convert to fraction form
    23,108.18/31,889.41 = 12,899.68/x
  3. Step 3: Cross multiply
    23,108.18x = 31,889.41 × 12,899.68
  4. Step 4: Simplify right side
    23,108.18x = 411,363,072.42
  5. Step 5: Solve for x
    x = 411,363,072.42/23,108.18
  6. Step 6: Final answer
    x = 17,801.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.