Home / 19,663.46-27,137.76-12,108.30

Finding the Fourth Proportional to 19,663.46, 27,137.76 and 12,108.30

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Solution

The fourth proportional to 19,663.46, 27,137.76 and 12,108.30 is: 16,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,663.46 : 27,137.76 = 12,108.30 : x
  2. Step 2: Convert to fraction form
    19,663.46/27,137.76 = 12,108.30/x
  3. Step 3: Cross multiply
    19,663.46x = 27,137.76 × 12,108.30
  4. Step 4: Simplify right side
    19,663.46x = 328,592,139.41
  5. Step 5: Solve for x
    x = 328,592,139.41/19,663.46
  6. Step 6: Final answer
    x = 16,710.80

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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.