Home / 31,799.76-47,715-13,093.68

Finding the Fourth Proportional to 31,799.76, 47,715 and 13,093.68

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Solution

The fourth proportional to 31,799.76, 47,715 and 13,093.68 is: 19,646.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,799.76 : 47,715 = 13,093.68 : x
  2. Step 2: Convert to fraction form
    31,799.76/47,715 = 13,093.68/x
  3. Step 3: Cross multiply
    31,799.76x = 47,715 × 13,093.68
  4. Step 4: Simplify right side
    31,799.76x = 624,764,941.20
  5. Step 5: Solve for x
    x = 624,764,941.20/31,799.76
  6. Step 6: Final answer
    x = 19,646.84

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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.