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Finding the Fourth Proportional to 13,355.58, 20,027.28 and 7,113.99

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Solution

The fourth proportional to 13,355.58, 20,027.28 and 7,113.99 is: 10,667.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.58 : 20,027.28 = 7,113.99 : x
  2. Step 2: Convert to fraction form
    13,355.58/20,027.28 = 7,113.99/x
  3. Step 3: Cross multiply
    13,355.58x = 20,027.28 × 7,113.99
  4. Step 4: Simplify right side
    13,355.58x = 142,473,869.65
  5. Step 5: Solve for x
    x = 142,473,869.65/13,355.58
  6. Step 6: Final answer
    x = 10,667.74

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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.