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Finding the Fourth Proportional to 25,246.80, 37,870.20 and 8,611.20

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Solution

The fourth proportional to 25,246.80, 37,870.20 and 8,611.20 is: 12,916.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,246.80 : 37,870.20 = 8,611.20 : x
  2. Step 2: Convert to fraction form
    25,246.80/37,870.20 = 8,611.20/x
  3. Step 3: Cross multiply
    25,246.80x = 37,870.20 × 8,611.20
  4. Step 4: Simplify right side
    25,246.80x = 326,107,866.24
  5. Step 5: Solve for x
    x = 326,107,866.24/25,246.80
  6. Step 6: Final answer
    x = 12,916.80

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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.