Home / 13,787.20-19,026.68-7,499.60

Finding the Fourth Proportional to 13,787.20, 19,026.68 and 7,499.60

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Solution

The fourth proportional to 13,787.20, 19,026.68 and 7,499.60 is: 10,349.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.20 : 19,026.68 = 7,499.60 : x
  2. Step 2: Convert to fraction form
    13,787.20/19,026.68 = 7,499.60/x
  3. Step 3: Cross multiply
    13,787.20x = 19,026.68 × 7,499.60
  4. Step 4: Simplify right side
    13,787.20x = 142,692,489.33
  5. Step 5: Solve for x
    x = 142,692,489.33/13,787.20
  6. Step 6: Final answer
    x = 10,349.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.