Home / 12,835.60-19,260.60-5,438.80

Finding the Fourth Proportional to 12,835.60, 19,260.60 and 5,438.80

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Solution

The fourth proportional to 12,835.60, 19,260.60 and 5,438.80 is: 8,161.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,835.60 : 19,260.60 = 5,438.80 : x
  2. Step 2: Convert to fraction form
    12,835.60/19,260.60 = 5,438.80/x
  3. Step 3: Cross multiply
    12,835.60x = 19,260.60 × 5,438.80
  4. Step 4: Simplify right side
    12,835.60x = 104,754,551.28
  5. Step 5: Solve for x
    x = 104,754,551.28/12,835.60
  6. Step 6: Final answer
    x = 8,161.25

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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.