Home / 13,624.36-18,800.70-7,656.60

Finding the Fourth Proportional to 13,624.36, 18,800.70 and 7,656.60

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Solution

The fourth proportional to 13,624.36, 18,800.70 and 7,656.60 is: 10,565.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,624.36 : 18,800.70 = 7,656.60 : x
  2. Step 2: Convert to fraction form
    13,624.36/18,800.70 = 7,656.60/x
  3. Step 3: Cross multiply
    13,624.36x = 18,800.70 × 7,656.60
  4. Step 4: Simplify right side
    13,624.36x = 143,949,439.62
  5. Step 5: Solve for x
    x = 143,949,439.62/13,624.36
  6. Step 6: Final answer
    x = 10,565.59

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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.