Home / 51,187.76-76,770.12-18,355.76

Finding the Fourth Proportional to 51,187.76, 76,770.12 and 18,355.76

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Solution

The fourth proportional to 51,187.76, 76,770.12 and 18,355.76 is: 27,529.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,187.76 : 76,770.12 = 18,355.76 : x
  2. Step 2: Convert to fraction form
    51,187.76/76,770.12 = 18,355.76/x
  3. Step 3: Cross multiply
    51,187.76x = 76,770.12 × 18,355.76
  4. Step 4: Simplify right side
    51,187.76x = 1,409,173,897.89
  5. Step 5: Solve for x
    x = 1,409,173,897.89/51,187.76
  6. Step 6: Final answer
    x = 27,529.51

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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.