Home / 34,131.60-47,087.80-20,697.95

Finding the Fourth Proportional to 34,131.60, 47,087.80 and 20,697.95

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Solution

The fourth proportional to 34,131.60, 47,087.80 and 20,697.95 is: 28,554.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,131.60 : 47,087.80 = 20,697.95 : x
  2. Step 2: Convert to fraction form
    34,131.60/47,087.80 = 20,697.95/x
  3. Step 3: Cross multiply
    34,131.60x = 47,087.80 × 20,697.95
  4. Step 4: Simplify right side
    34,131.60x = 974,620,995.98
  5. Step 5: Solve for x
    x = 974,620,995.98/34,131.60
  6. Step 6: Final answer
    x = 28,554.80

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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.