Home / 13,656.69-18,846.23-7,688.39

Finding the Fourth Proportional to 13,656.69, 18,846.23 and 7,688.39

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Solution

The fourth proportional to 13,656.69, 18,846.23 and 7,688.39 is: 10,609.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.69 : 18,846.23 = 7,688.39 : x
  2. Step 2: Convert to fraction form
    13,656.69/18,846.23 = 7,688.39/x
  3. Step 3: Cross multiply
    13,656.69x = 18,846.23 × 7,688.39
  4. Step 4: Simplify right side
    13,656.69x = 144,897,033.60
  5. Step 5: Solve for x
    x = 144,897,033.60/13,656.69
  6. Step 6: Final answer
    x = 10,609.97

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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.