Home / 28,925.40-43,359.30-13,315.80

Finding the Fourth Proportional to 28,925.40, 43,359.30 and 13,315.80

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Solution

The fourth proportional to 28,925.40, 43,359.30 and 13,315.80 is: 19,960.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,925.40 : 43,359.30 = 13,315.80 : x
  2. Step 2: Convert to fraction form
    28,925.40/43,359.30 = 13,315.80/x
  3. Step 3: Cross multiply
    28,925.40x = 43,359.30 × 13,315.80
  4. Step 4: Simplify right side
    28,925.40x = 577,363,766.94
  5. Step 5: Solve for x
    x = 577,363,766.94/28,925.40
  6. Step 6: Final answer
    x = 19,960.44

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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.