Home / 28,964.18-39,960.78-18,352.28

Finding the Fourth Proportional to 28,964.18, 39,960.78 and 18,352.28

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Solution

The fourth proportional to 28,964.18, 39,960.78 and 18,352.28 is: 25,319.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,964.18 : 39,960.78 = 18,352.28 : x
  2. Step 2: Convert to fraction form
    28,964.18/39,960.78 = 18,352.28/x
  3. Step 3: Cross multiply
    28,964.18x = 39,960.78 × 18,352.28
  4. Step 4: Simplify right side
    28,964.18x = 733,371,423.58
  5. Step 5: Solve for x
    x = 733,371,423.58/28,964.18
  6. Step 6: Final answer
    x = 25,319.94

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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.