Home / 25,210.45-37,815.98-7,680.43

Finding the Fourth Proportional to 25,210.45, 37,815.98 and 7,680.43

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Solution

The fourth proportional to 25,210.45, 37,815.98 and 7,680.43 is: 11,520.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,210.45 : 37,815.98 = 7,680.43 : x
  2. Step 2: Convert to fraction form
    25,210.45/37,815.98 = 7,680.43/x
  3. Step 3: Cross multiply
    25,210.45x = 37,815.98 × 7,680.43
  4. Step 4: Simplify right side
    25,210.45x = 290,442,954.04
  5. Step 5: Solve for x
    x = 290,442,954.04/25,210.45
  6. Step 6: Final answer
    x = 11,520.74

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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.