Home / 13,655.77-18,846.75-7,688.60

Finding the Fourth Proportional to 13,655.77, 18,846.75 and 7,688.60

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Solution

The fourth proportional to 13,655.77, 18,846.75 and 7,688.60 is: 10,611.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.77 : 18,846.75 = 7,688.60 : x
  2. Step 2: Convert to fraction form
    13,655.77/18,846.75 = 7,688.60/x
  3. Step 3: Cross multiply
    13,655.77x = 18,846.75 × 7,688.60
  4. Step 4: Simplify right side
    13,655.77x = 144,905,122.05
  5. Step 5: Solve for x
    x = 144,905,122.05/13,655.77
  6. Step 6: Final answer
    x = 10,611.27

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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.