Home / 12,901.40-17,789.73-8,416.70

Finding the Fourth Proportional to 12,901.40, 17,789.73 and 8,416.70

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Solution

The fourth proportional to 12,901.40, 17,789.73 and 8,416.70 is: 11,605.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901.40 : 17,789.73 = 8,416.70 : x
  2. Step 2: Convert to fraction form
    12,901.40/17,789.73 = 8,416.70/x
  3. Step 3: Cross multiply
    12,901.40x = 17,789.73 × 8,416.70
  4. Step 4: Simplify right side
    12,901.40x = 149,730,820.49
  5. Step 5: Solve for x
    x = 149,730,820.49/12,901.40
  6. Step 6: Final answer
    x = 11,605.78

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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.