Home / 31,338.40-47,056.20-18,216.40

Finding the Fourth Proportional to 31,338.40, 47,056.20 and 18,216.40

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Solution

The fourth proportional to 31,338.40, 47,056.20 and 18,216.40 is: 27,352.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,338.40 : 47,056.20 = 18,216.40 : x
  2. Step 2: Convert to fraction form
    31,338.40/47,056.20 = 18,216.40/x
  3. Step 3: Cross multiply
    31,338.40x = 47,056.20 × 18,216.40
  4. Step 4: Simplify right side
    31,338.40x = 857,194,561.68
  5. Step 5: Solve for x
    x = 857,194,561.68/31,338.40
  6. Step 6: Final answer
    x = 27,352.85

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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.