Home / 25,447.92-38,068.20-21,300.72

Finding the Fourth Proportional to 25,447.92, 38,068.20 and 21,300.72

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Solution

The fourth proportional to 25,447.92, 38,068.20 and 21,300.72 is: 31,864.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,447.92 : 38,068.20 = 21,300.72 : x
  2. Step 2: Convert to fraction form
    25,447.92/38,068.20 = 21,300.72/x
  3. Step 3: Cross multiply
    25,447.92x = 38,068.20 × 21,300.72
  4. Step 4: Simplify right side
    25,447.92x = 810,880,069.10
  5. Step 5: Solve for x
    x = 810,880,069.10/25,447.92
  6. Step 6: Final answer
    x = 31,864.30

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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.