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Finding the Fourth Proportional to 37,280.40, 55,904.40 and 12,310.80

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Solution

The fourth proportional to 37,280.40, 55,904.40 and 12,310.80 is: 18,460.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,280.40 : 55,904.40 = 12,310.80 : x
  2. Step 2: Convert to fraction form
    37,280.40/55,904.40 = 12,310.80/x
  3. Step 3: Cross multiply
    37,280.40x = 55,904.40 × 12,310.80
  4. Step 4: Simplify right side
    37,280.40x = 688,227,887.52
  5. Step 5: Solve for x
    x = 688,227,887.52/37,280.40
  6. Step 6: Final answer
    x = 18,460.85

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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.