Home / 25,665.80-38,495.28-8,137.40

Finding the Fourth Proportional to 25,665.80, 38,495.28 and 8,137.40

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Solution

The fourth proportional to 25,665.80, 38,495.28 and 8,137.40 is: 12,205.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,665.80 : 38,495.28 = 8,137.40 : x
  2. Step 2: Convert to fraction form
    25,665.80/38,495.28 = 8,137.40/x
  3. Step 3: Cross multiply
    25,665.80x = 38,495.28 × 8,137.40
  4. Step 4: Simplify right side
    25,665.80x = 313,251,491.47
  5. Step 5: Solve for x
    x = 313,251,491.47/25,665.80
  6. Step 6: Final answer
    x = 12,205.02

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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.