Home / 13,276.71-19,915.25-3,415.77

Finding the Fourth Proportional to 13,276.71, 19,915.25 and 3,415.77

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Solution

The fourth proportional to 13,276.71, 19,915.25 and 3,415.77 is: 5,123.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,276.71 : 19,915.25 = 3,415.77 : x
  2. Step 2: Convert to fraction form
    13,276.71/19,915.25 = 3,415.77/x
  3. Step 3: Cross multiply
    13,276.71x = 19,915.25 × 3,415.77
  4. Step 4: Simplify right side
    13,276.71x = 68,025,896.41
  5. Step 5: Solve for x
    x = 68,025,896.41/13,276.71
  6. Step 6: Final answer
    x = 5,123.70

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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.