Home / 12,810.40-19,215.60-3,576.40

Finding the Fourth Proportional to 12,810.40, 19,215.60 and 3,576.40

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Solution

The fourth proportional to 12,810.40, 19,215.60 and 3,576.40 is: 5,364.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810.40 : 19,215.60 = 3,576.40 : x
  2. Step 2: Convert to fraction form
    12,810.40/19,215.60 = 3,576.40/x
  3. Step 3: Cross multiply
    12,810.40x = 19,215.60 × 3,576.40
  4. Step 4: Simplify right side
    12,810.40x = 68,722,671.84
  5. Step 5: Solve for x
    x = 68,722,671.84/12,810.40
  6. Step 6: Final answer
    x = 5,364.60

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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.