Home / 13,787.01-20,667.56-7,217.51

Finding the Fourth Proportional to 13,787.01, 20,667.56 and 7,217.51

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Solution

The fourth proportional to 13,787.01, 20,667.56 and 7,217.51 is: 10,819.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.01 : 20,667.56 = 7,217.51 : x
  2. Step 2: Convert to fraction form
    13,787.01/20,667.56 = 7,217.51/x
  3. Step 3: Cross multiply
    13,787.01x = 20,667.56 × 7,217.51
  4. Step 4: Simplify right side
    13,787.01x = 149,168,181.55
  5. Step 5: Solve for x
    x = 149,168,181.55/13,787.01
  6. Step 6: Final answer
    x = 10,819.47

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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.