Home / 25,671.28-38,511.72-8,136.40

Finding the Fourth Proportional to 25,671.28, 38,511.72 and 8,136.40

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Solution

The fourth proportional to 25,671.28, 38,511.72 and 8,136.40 is: 12,206.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,671.28 : 38,511.72 = 8,136.40 : x
  2. Step 2: Convert to fraction form
    25,671.28/38,511.72 = 8,136.40/x
  3. Step 3: Cross multiply
    25,671.28x = 38,511.72 × 8,136.40
  4. Step 4: Simplify right side
    25,671.28x = 313,346,758.61
  5. Step 5: Solve for x
    x = 313,346,758.61/25,671.28
  6. Step 6: Final answer
    x = 12,206.12

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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.